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5/16-18 Hex Cap Screws

Hex Cap Screws are hex headed fasteners with external machine screw threads and differ from hex machine bolts by having a washer surface on the underside or bearing side of the head and a chamfered thread end. Hex cap screws have tighter dimensional tolerances than bolts. Metric hex cap screws are specified by various DIN, ISO and JIS standards, and US/Imperial hex cap screws are dimensionally specified by the ASME B18.2.1 specification.

193,443 Hex Head Cap Screw, showing 200, (click on any line for more information)

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Supplier	Loc	Type	Material	Finish	Size	Description	Qty
Century	FL	Hex Head Cap Screw	Grade 8	Zinc/Yellow	5/16-18 x 1 1/4	b1821bh031c125n	350	Contact_Supplier

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SWACO	OH	Hex Head Cap Screw	Steel	Plain	5/16-18 x 1 3/4	5/16-18x1 3/4 hex cap sc full thread	150	Contact_Supplier
SWACO	OH	Hex Head Cap Screw	Grade 2	Black Oxide	5/16-18 x 2 1/4	5/16-18x2 1/4 hhcs gr2 stl blk ox	500	Contact_Supplier
Big Red	OK	Hex Head Cap Screw	Grade 8	Zinc/Yellow	5/16-18 x 1/2	5/16-18 x 1/2 (ft) nc gr.8 hex head cap screws zinc-yellow bake (canada)	1,590	Contact_Supplier
Big Red	OK	Hex Head Cap Screw	Grade 8	Zinc/Yellow	5/16-18 x 5 1/2	5/16-18 x 5-1/2 (pt) nc gr.8 hex head cap screws zinc-yellow bake (canada)	147	Contact_Supplier
Big Red	OK	Hex Head Cap Screw	Grade 8	Electrolytic Zinc Basecoat + Topcoats (Climacoat, Climaseal, etc.)	5/16-18 x 1 1/4	5/16-18 x 1-1/4 nc gr 8 hex cap screw dacromet w/plus sealers	5,620	Contact_Supplier
Big Red	OK	Hex Head Cap Screw	Grade 8	Zinc/Yellow	5/16-18 x 3	5/16-18 x 3 (pt) nc gr.8 hex head cap screws zinc-yellow bake (canada)	15	Contact_Supplier
Big Red	OK	Hex Head Cap Screw	Grade 8	Plain	5/16-18 x 1 1/2	5/16-18 x 1-1/2 nc gr 8 hex cap screws-plain finish (canada)	788	Contact_Supplier
Big Red	OK	Hex Head Cap Screw	Grade 8	Plain	5/16-18 x 3/4	5/16-18 x 3/4 nc gr 8 hex cap screws-plain finish (canada)	385	Contact_Supplier
Big Red	OK	Hex Head Cap Screw	Grade 8	Plain	5/16-18 x 3/4	5/16-18 x 3/4 nc gr. 8 hex cap screws-plain finish	97	Contact_Supplier
Big Red	OK	Hex Head Cap Screw	Grade 8	Plain	5/16-18 x 5 1/2	5/16-18 x 5-1/2 nc gr 8 hex cap screws-plain finish (canada)	233	Contact_Supplier
Big Red	OK	Hex Head Cap Screw	Grade 8	Zinc/Yellow	5/16-18 x 3 1/2	5/16-18 x 3-1/2 (pt) nc gr.8 hex head cap screws zinc-yellow bake (canada)	309	Contact_Supplier
MESAFAST	CA	Hex Head Cap Screw	Grade 5	Zinc/Clear	5/16-18 x 3 3/4	5/16-18x3-3/4 hex cap screw gr5 steel zinc	80.0	Contact_Supplier
SJS Prod	CA	Hex Head Cap Screw	300 Stainless (A1,A2, 18-8,304,310 etc.)	Plain	5/16-18 x 2	5/16-18x2 h/h c/s ss	298	Contact_Supplier
SJS Prod	CA	Hex Head Cap Screw	Grade 5	Zinc/Black	5/16-18 x 3/4	h/h c/s grd 5 5/16-18 x 3/4 blk zn rohs	4812	Contact_Supplier
SJS Prod	CA	Hex Head Cap Screw	Grade 5	Zinc/Clear	5/16-18 x 1/2	5/16-18x1/2 h/h c/s gr 5 st zp rohs	6150	Contact_Supplier
SJS Prod	CA	Hex Head Cap Screw	Grade 5	Zinc/Clear	5/16-18 x 1	5/16-18x1 hex c/s grade 5 zp	2080	Contact_Supplier
SJS Prod	CA	Hex Head Cap Screw	Grade 5	Zinc/Clear	5/16-18 x 2	5/16-18x2 h/h c/s grade 5 st zp rohs	100	Contact_Supplier
SJS Prod	CA	Hex Head Cap Screw	Grade 5	Zinc/Clear	5/16-18 x 3 1/4	5/16-18x3-1/4 h/h c/s grd 5 st zp rohs	1365	Contact_Supplier
SJS Prod	CA	Hex Head Cap Screw	Grade 2	Zinc/Clear	5/16-18 x 3 1/2	5/16-18 x 3-1/2 hex cap screw gr2 zp	75	Contact_Supplier
SJS Prod	CA	Hex Head Cap Screw	Grade 5	Zinc/Clear	5/16-18 x 3 1/2	5/16-18 x 3-1/2 hex cap screw gr5 zp	33	Contact_Supplier
SJS Prod	CA	Hex Head Cap Screw	Grade 5	Zinc/Clear	5/16-18 x 3/4	h/h c/s grade 5 5/16-18 x 3/4 st zp	650	Contact_Supplier
SJS Prod	CA	Hex Head Cap Screw	Grade 5	Zinc/Clear	5/16-18 x 2 3/4	5/16-18x2-3/4 h/h c/s grd 5 st zp rohs () ()	928	Contact_Supplier
SJS Prod	CA	Hex Head Cap Screw	Grade 2	Zinc/Clear	5/16-18 x 3 1/4	5/16-18 x 3-1/4 h/h c/s zp grade 2	6642	Contact_Supplier
SJS Prod	CA	Hex Head Cap Screw	300 Stainless (A1,A2, 18-8,304,310 etc.)	Plain	5/16-18 x 1 3/4	5/16-18x1 3/4 h/h c/s ss		Contact_Supplier
SJS Prod	CA	Hex Head Cap Screw	Steel	Zinc/Clear	5/16-18 x 2	5/16-18x2 h/h c/s st zp rohs		Contact_Supplier
SJS Prod	CA	Hex Head Cap Screw	300 Stainless (A1,A2, 18-8,304,310 etc.)	Plain	5/16-18 x 5/8	ms35307331 hex bolt ss 5/16 18x5/8		Contact_Supplier
SJS Prod	CA	Hex Head Cap Screw	300 Stainless (A1,A2, 18-8,304,310 etc.)	Plain	5/16-18 x 1	5/16-18x1 hex hd c/s ss b0		Contact_Supplier
Northern	MN	Hex Head Cap Screw	Grade 5	Plain	5/16-18 x 3 1/2	s/o 5/16-18x3-1/2 hex cap 5nc plain	168	Contact_Supplier
Northern	MN	Hex Head Cap Screw	Grade 5	Plain	5/16-18 x 4 1/2	s/o 5/16-18x4-1/2 hex cap 5nc plain	17	Contact_Supplier
Northern	MN	Hex Head Cap Screw	Grade 5	Plain	5/16-18 x 1 1/2	s/o 5/16-18x1-1/2 hex cap 5nc plain	1250	Contact_Supplier
Northern	MN	Hex Head Cap Screw	Grade 8	Plain	5/16-18 x 2	s/o 5/16-18x2 hex cap 8nc plain	375	Contact_Supplier
Northern	MN	Hex Head Cap Screw	Grade 5	Plain	5/16-18 x 4	s/o 5/16-18x4 hex cap 5nc plain	100	Contact_Supplier
Northern	MN	Hex Head Cap Screw	316, 317, A4 Stainless	Plain	5/16-18 x 3/4	s/o 5/16-18x3/4 316ss hex cap	25	Contact_Supplier
Northern	MN	Hex Head Cap Screw	Grade 5	Zinc/Yellow	5/16-18 x 3/4	s/o 5/16-18x3/4 hex cap 5nc zinc/yellow	935	Contact_Supplier
Northern	MN	Hex Head Cap Screw	Grade 5	Plain	5/16-18 x 2 1/2	s/o 5/16-18x2-1/2 hex cap 5nc plain	700	Contact_Supplier
Northern	MN	Hex Head Cap Screw	Grade 5	Plain	5/16-18 x 7	s/o 5/16-18x7 hex cap 5nc plain	6	Contact_Supplier
Northern	MN	Hex Head Cap Screw	Grade 2	Galvanized	5/16-18 x 5	s/o 5/16-18x5 hex blt 2nc bulk galvanized	50	Contact_Supplier
Northern	MN	Hex Head Cap Screw	Grade 2	Zinc/Clear	5/16-18 x 2 1/4	s/o 5/16-18x2-1/4 hex blt 2nc zinc	51300	Contact_Supplier
Northern	MN	Hex Head Cap Screw	316, 317, A4 Stainless	Plain	5/16-18 x 1/2	s/o 5/16-18x1/2 316ss hex cap	652	Contact_Supplier
Northern	MN	Hex Head Cap Screw	Grade 5	Zinc/Clear	5/16-18 x 2 1/4	s/o 5/16-18x2-1/4 full thread 5nc zinc	499	Contact_Supplier
Northern	MN	Hex Head Cap Screw	Grade 5	Plain	5/16-18 x 2 1/4	s/o 5/16-18x2-1/4 hex cap 5nc plain	150	Contact_Supplier
Northern	MN	Hex Head Cap Screw	Grade 5	Zinc/Yellow	5/16-18 x 2 1/4	s/o 5/16-18x2-1/4 hex cap 5nc zinc/yellow	400	Contact_Supplier
Northern	MN	Hex Head Cap Screw	Grade 8	Plain	5/16-18 x 1	s/o 5/16-18x1 hex cap 8nc plain	34	Contact_Supplier
Northern	MN	Hex Head Cap Screw	316, 317, A4 Stainless	Plain	5/16-18 x 2	s/o 5/16-18x2 316ss hex cap	11	Contact_Supplier
Northern	MN	Hex Head Cap Screw	Grade 5	Plain	5/16-18 x 5/8	s/o 5/16-18x5/8 hex cap 5nc plain	1388	Contact_Supplier
Northern	MN	Hex Head Cap Screw	Grade 2	Zinc/Clear	5/16-18 x 1/2	s/o 5/16-18x1/2 hex blt 2nc zinc	9600	Contact_Supplier
Northern	MN	Hex Head Cap Screw	Grade 2	Zinc/Clear	5/16-18 x 5 1/2	s/o 5/16-18x5-1/2 hex blt 2nc zinc	145	Contact_Supplier
Delta	TX	Hex Head Cap Screw	Grade 2	Zinc/Clear	5/16-18 x 4 1/2	hx hd c/s gr 2 zinc 5/16-18 x 4 1/2	4885	Contact_Supplier
Delta	TX	Hex Head Cap Screw	Grade 2	Galvanized	5/16-18 x 1	hx hd c/s gr 2 hdg 5/16-18 x 1	70	Contact_Supplier
Delta	TX	Hex Head Cap Screw	Grade 2	Plain	5/16-18 x 1	hx hd c/s gr 2 plain 5/16-18 x 1	1306	Contact_Supplier
Delta	TX	Hex Head Cap Screw	Grade 2	Galvanized	5/16-18 x 1 3/4	hx hd c/s gr 2 hdg 5/16-18 x 1 3/4	700	Contact_Supplier
Delta	TX	Hex Head Cap Screw	Grade 2	Galvanized	5/16-18 x 2 1/2	hx hd c/s gr 2 hdg 5/16-18 x 2 1/2	380	Contact_Supplier
Delta	TX	Hex Head Cap Screw	Grade 2	Zinc/Clear	5/16-18 x 2 1/2	hx hd c/s gr 2 zinc 5/16-18 x 2 1/2	400	Contact_Supplier
Delta	TX	Hex Head Cap Screw	Grade 2	Plain	5/16-18 x 1 1/2	hx hd c/s gr 2 plain 5/16-18 x 1 1/2	125	Contact_Supplier
Delta	TX	Hex Head Cap Screw	Grade 2	Zinc/Clear	5/16-18 x 4	hx hd c/s gr 2 zinc 5/16-18 x 4	984	Contact_Supplier
Delta	TX	Hex Head Cap Screw	Grade 2	Zinc/Clear	5/16-18 x 1	hx hd c/s gr 2 zinc 5/16-18 x 1	1250	Contact_Supplier
Delta	TX	Hex Head Cap Screw	Grade 2	Zinc/Clear	5/16-18 x 7	hx hd c/s gr 2 zinc 5/16-18 x 7	200	Contact_Supplier
Delta	TX	Hex Head Cap Screw	Grade 5	Zinc/Clear	5/16-18 x 1/2	hx hd c/s gr 5 zinc 5/16-18 x 1/2	1435	Contact_Supplier
Delta	TX	Hex Head Cap Screw	Grade 5	Plain	5/16-18 x 3/4	hx hd c/s gr 5 plain 5/16-18 x 3/4	505	Contact_Supplier
Delta	TX	Hex Head Cap Screw	Grade 5	Zinc/Clear	5/16-18 x 7/8	hx hd c/s gr 5 zinc 5/16-18 x 7/8	626	Contact_Supplier
Delta	TX	Hex Head Cap Screw	Grade 5	Plain	5/16-18 x 7/8	hx hd c/s gr 5 plain 5/16-18 x 7/8	301	Contact_Supplier
Delta	TX	Hex Head Cap Screw	Grade 5	Zinc/Clear	5/16-18 x 5/8	hx hd c/s gr 5 zinc 5/16-18 x 5/8	1049	Contact_Supplier
Delta	TX	Hex Head Cap Screw	Grade 5	Zinc/Clear	5/16-18 x 3/4	hx hd c/s gr 5 zinc 5/16-18 x 3/4	3064	Contact_Supplier
Delta	TX	Hex Head Cap Screw	Grade 5	Plain	5/16-18 x 1	hx hd c/s gr 5 plain 5/16-18 x 1	396	Contact_Supplier
Delta	TX	Hex Head Cap Screw	Grade 5	Zinc/Clear	5/16-18 x 1 1/8	hx hd c/s gr 5 zinc 5/16-18 x 1 1/8	98	Contact_Supplier
Delta	TX	Hex Head Cap Screw	Grade 5	Zinc/Clear	5/16-18 x 1 3/8	hx hd c/s gr 5 zinc 5/16-18 x 1 3/8	240	Contact_Supplier
Delta	TX	Hex Head Cap Screw	Grade 5	Fluoropolymer-Based (Xylan, Fluorokote, Teflon)	5/16-18 x 1	hx hd c/s gr 5 xylan blue 5/16-18 x 1 (XYLAN 1425 BLUE)	273	Contact_Supplier
ISSCO	MO	Hex Head Cap Screw	Grade 2	Plain	5/16-18 x 3 3/4		7800	Contact_Supplier
ISSCO	MO	Hex Head Cap Screw	Grade 2	Zinc/Clear	5/16-18 x 5/8		170800	Contact_Supplier
ISSCO	MO	Hex Head Cap Screw	Grade 2	Zinc/Clear	5/16-18 x 1	longlock strip	56640	Contact_Supplier
ISSCO	MO	Hex Head Cap Screw	Brass	Plain	5/16-18 x 2 1/2		600	Contact_Supplier
ISSCO	MO	Hex Head Cap Screw	Brass	Plain	5/16-18 x 4		400	Contact_Supplier
ISSCO	MO	Hex Head Cap Screw	Brass	Plain	5/16-18 x 3/4		1245	Contact_Supplier
ISSCO	MO	Hex Head Cap Screw	Brass	Plain	5/16-18 x 3 1/2		2350	Contact_Supplier
ISSCO	MO	Hex Head Cap Screw	Grade 5	Zinc/Clear	5/16-18 x 1 1/4	patchlock	1200	Contact_Supplier
ISSCO	MO	Hex Head Cap Screw	Grade 5	Zinc/Clear	5/16-18 x 1 3/8		3000	Contact_Supplier
ISSCO	MO	Hex Head Cap Screw	Grade 5	Zinc/Clear	5/16-18 x 1	patchlock	4100	Contact_Supplier
ISSCO	MO	Hex Head Cap Screw	Grade 5	Zinc/Clear	5/16-18 x 3/4	patchlock	11161	Contact_Supplier
General F	MI	Hex Head Cap Screw	Grade 8	Plain	5/16-18 x 07/8	5/16-18x0.875 hhcs gr8 alloy b18.2.1	135,000	Contact_Supplier
General F	MI	Hex Head Cap Screw	Grade 8	Plain	5/16-18 x 0 3/4	5/16-18x0.75 hhcs gr8 alloy b18.2.1	4,300	Contact_Supplier
General F	MI	Hex Head Cap Screw	Grade 8	Plain	5/16-18 x 1 3/4	5/16-18x1.75 hhcs grade 8 alloy b18.2.1	5,100	Contact_Supplier
General F	MI	Hex Head Cap Screw	Grade 8	Plain	5/16-18 x 1	5/16-18x1 hhcs gr8 zidi .0002 b18.2.1	2,380	Contact_Supplier
Delta	TX	Hex Head Cap Screw	Grade 5	Zinc/Clear	5/16-18 x 5 1/4	hx hd c/s gr 5 zinc 5/16-18 x 5 1/4	323	Contact_Supplier
Delta	TX	Hex Head Cap Screw	316, 317, A4 Stainless	Plain	5/16-18 x 1 1/4	hx hd c/s 316 sst 5/16-18 x 1 1/4	112	Contact_Supplier
Delta	TX	Hex Head Cap Screw	Grade B7	Plain	5/16-18 x 1	hx hd c/s b7 plain 5/16-18 x 1	66	Contact_Supplier
Delta	TX	Hex Head Cap Screw	Brass	Plain	5/16-18 x 1	hx hd c/s brass 5/16-18 x 1	147	Contact_Supplier
SRF	AL	Hex Head Cap Screw	300 Stainless (A1,A2, 18-8,304,310 etc.)	Plain	5/16-18 x 3	hcs s/s	300	Contact_Supplier
SRF	AL	Hex Head Cap Screw	300 Stainless (A1,A2, 18-8,304,310 etc.)	Plain	5/16-18 x 3 1/4	hcs s/s	-	Contact_Supplier
SRF	AL	Hex Head Cap Screw	Grade 5	Zinc/Clear	5/16-18 x 3 1/4	hcs	453	Contact_Supplier
SRF	AL	Hex Head Cap Screw	Grade 2	Galvanized	5/16-18 x 4 1/2	hcs	134	Contact_Supplier
SRF	AL	Hex Head Cap Screw	Grade 5	Zinc/Clear	5/16-18 x 5 1/2	hcs	160	Contact_Supplier
SRF	AL	Hex Head Cap Screw	Grade 8	Zinc/Clear	5/16-18 x 5 1/2	hcs	-	Contact_Supplier
SRF	AL	Hex Head Cap Screw	Grade 8	Zinc/Clear	5/16-18 x 4 1/2	hcs	-	Contact_Supplier
SRF	AL	Hex Head Cap Screw	Grade 8	Zinc/Clear	5/16-18 x 6	hcs	-	Contact_Supplier
SRF	AL	Hex Head Cap Screw	Grade 2	Zinc/Clear	5/16-18 x 5/8	hcs	270	Contact_Supplier
SRF	AL	Hex Head Cap Screw	300 Stainless (A1,A2, 18-8,304,310 etc.)	Plain	5/16-18 x 5/8	hcs s/s	490	Contact_Supplier
Delta	TX	Hex Head Cap Screw	Steel	Plain	5/16-18 x 1 1/2	hx hd c/s nylon 5/16-18 x 1 1/2	50	Contact_Supplier
THRDFAST	AL	Hex Head Cap Screw	Grade 2	Zinc/Clear	5/16-18 x 1	gr2 hex c/s b18.2.1	4,695	Contact_Supplier
THRDFAST	AL	Hex Head Cap Screw	Grade 5	Zinc/Clear	5/16-18 x 1/2	gr5 hex c/s b18.2.1	4,274	Contact_Supplier
THRDFAST	AL	Hex Head Cap Screw	316, 317, A4 Stainless	Plain	5/16-18 x 4	t-316 ss hex c/s b18.2.1	771	Contact_Supplier
THRDFAST	AL	Hex Head Cap Screw	Grade 5	Plain	5/16-18 x 1 3/4	gr5 hex c/s b18.2.1	474	Contact_Supplier
THRDFAST	AL	Hex Head Cap Screw	316, 317, A4 Stainless	Plain	5/16-18 x 2 1/4	t-316 ss hex c/s b18.2.1	225	Contact_Supplier
THRDFAST	AL	Hex Head Cap Screw	316, 317, A4 Stainless	Plain	5/16-18 x 3 1/4	t-316 ss hex c/s b18.2.1	221	Contact_Supplier
THRDFAST	AL	Hex Head Cap Screw	Silicon Bronze	Plain	5/16-18 x 1	sili brnz hex c/s b18.2.1	99	Contact_Supplier
THRDFAST	AL	Hex Head Cap Screw	316, 317, A4 Stainless	Plain	5/16-18 x 2 3/4	t-316 ss hex c/s b18.2.1	75	Contact_Supplier
THRDFAST	AL	Hex Head Cap Screw	316, 317, A4 Stainless	Plain	5/16-18 x 3 1/2	t-316 ss hex c/s b18.2.1	50	Contact_Supplier
THRDFAST	MS	Hex Head Cap Screw	Grade 5	Zinc/Clear	5/16-18 x 5	gr5 hex c/s b18.2.1	24	Contact_Supplier
THRDFAST	MS	Hex Head Cap Screw	300 Stainless (A1,A2, 18-8,304,310 etc.)	Plain	5/16-18 x 5/8	18-8 ss hex c/s b18.2.1	29	Contact_Supplier
THRDFAST	MS	Hex Head Cap Screw	300 Stainless (A1,A2, 18-8,304,310 etc.)	Plain	5/16-18 x 5	18-8 ss hex c/s b18.2.1	2	Contact_Supplier
THRDFAST	MS	Hex Head Cap Screw	Grade 5	Zinc/Clear	5/16-18 x 6	gr5 hex c/s b18.2.1	6	Contact_Supplier
THRDFAST	MS	Hex Head Cap Screw	300 Stainless (A1,A2, 18-8,304,310 etc.)	Plain	5/16-18 x 2 1/4	18-8 ss hex c/s b18.2.1	199	Contact_Supplier
THRDFAST	MS	Hex Head Cap Screw	Grade 5	Zinc/Clear	5/16-18 x 4 1/2	gr5 hex c/s b18.2.1	177	Contact_Supplier
THRDFAST	MS	Hex Head Cap Screw	316, 317, A4 Stainless	Plain	5/16-18 x 2 3/4	t-316 ss hex c/s b18.2.1	71	Contact_Supplier
THRDFAST	MS	Hex Head Cap Screw	Grade 5	Zinc/Clear	5/16-18 x 3 1/2	gr5 hex c/s b18.2.1	57	Contact_Supplier
Eurolink	SC	Hex Head Cap Screw	300 Stainless (A1,A2, 18-8,304,310 etc.)	Plain	5/16-18 x 1 1/2	5/16-18 x 1-1/2 hhcs bumax 88 stainless partial thread hex head cap screw partial thread hex head cap screw	inquire	Contact_Supplier
Eurolink	SC	Hex Head Cap Screw	300 Stainless (A1,A2, 18-8,304,310 etc.)	Plain	5/16-18 x 3 1/2	5/16-18 x 3-1/2 hhcs bumax 88 stainless steel partial thread hex head cap screw partial thread hex head cap screw	inquire	Contact_Supplier

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