Silicon Bronze Cap Screws

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Material

651 Silicon Bronze

Silicon Bronze

System of Measurement

Thread Size

Length

Threading

Fastener Head Type

Head Width

Drive Style

Thread Spacing

Head Height

Thread Direction

Thread Type

Tensile Strength

30,000 psi to 99,999 psi

REACH

Compliant

Not Compliant

RoHS

Compliant

Thread Fit

Unified Standard Class 2A

Unified Standard Class 3A

Tip Type

Specifications Met

Performance

Hardness

DFARS Specialty Metals

Exempt

Sold As

Individual

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Export Control Classification Number (ECCN)

Hex Head Profile

Socket Head Profile

130 Products

About Hex Head Screws and Bolts

Choose a hex head fastener with the right threading, thread size, material, and strength for your equipment.

Bronze Hex Head Screws


Fully Threaded	Partially Threaded

Stronger and more corrosion resistant than brass screws. Often used in marine environments, these are also a good choice for industrial pumps and valves. The head's six flat sides keep wrenches and sockets from slipping and rounding off the drive.

Length is measured from under the head.

		Head
	Lg.	Wd.	Ht.	Threading	Thread Spacing	Tensile Strength, psi	Pkg. Qty.		Pkg.
651 Silicon Bronze







				1/4"-20

				3/8"	7/16"	5/32"	Fully Threaded	Coarse	70,000	25	93516A535	000000


				1/2"	7/16"	5/32"	Fully Threaded	Coarse	70,000	25	93516A537	00000
				5/8"	7/16"	5/32"	Fully Threaded	Coarse	70,000	25	93516A539	00000
				3/4"	7/16"	5/32"	Fully Threaded	Coarse	70,000	10	93516A540	0000
				7/8"	7/16"	5/32"	Fully Threaded	Coarse	70,000	10	93516A111	0000
				1"	7/16"	5/32"	Fully Threaded	Coarse	70,000	10	93516A542	00000
				1 1/8"	7/16"	5/32"	Fully Threaded	Coarse	70,000	10	93516A112	00000
				1 1/4"	7/16"	5/32"	Fully Threaded	Coarse	70,000	10	93516A544	00000
				1 1/2"	7/16"	5/32"	Fully Threaded	Coarse	70,000	10	93516A546	00000
				1 3/4"	7/16"	5/32"	Fully Threaded	Coarse	70,000	10	93516A113	00000
				2"	7/16"	5/32"	Fully Threaded	Coarse	70,000	10	93516A550	00000


				2 1/4"	7/16"	5/32"	Fully Threaded	Coarse	70,000	10	93516A114	00000
				2 1/2"	7/16"	5/32"	Fully Threaded	Coarse	70,000	10	93516A552	00000
				2 3/4"	7/16"	5/32"	Fully Threaded	Coarse	70,000	5	93516A115	0000
				3"	7/16"	5/32"	Fully Threaded	Coarse	70,000	5	93516A554	0000
				3 1/4"	7/16"	5/32"	Fully Threaded	Coarse	70,000	5	93516A116	00000
				3 1/2"	7/16"	5/32"	Fully Threaded	Coarse	70,000	5	93516A117	00000
				4"	7/16"	5/32"	Fully Threaded	Coarse	70,000	5	93516A119	00000




						5/16"-18

						3/8"	1/2"	13/64"	Fully Threaded	Coarse	70,000	5	93516A121	0000


						1/2"	1/2"	13/64"	Fully Threaded	Coarse	70,000	10	93516A578	00000
						5/8"	1/2"	13/64"	Fully Threaded	Coarse	70,000	10	93516A122	00000
						3/4"	1/2"	13/64"	Fully Threaded	Coarse	70,000	10	93516A581	00000
						7/8"	1/2"	13/64"	Fully Threaded	Coarse	70,000	10	93516A123	00000
						1"	1/2"	13/64"	Fully Threaded	Coarse	70,000	10	93516A583	00000
						1 1/4"	1/2"	13/64"	Fully Threaded	Coarse	70,000	10	93516A585	00000
						1 1/2"	1/2"	13/64"	Fully Threaded	Coarse	70,000	10	93516A587	00000
						1 3/4"	1/2"	13/64"	Fully Threaded	Coarse	70,000	5	93516A124	0000
						2"	1/2"	13/64"	Fully Threaded	Coarse	70,000	5	93516A591	00000
						2 1/4"	1/2"	13/64"	Fully Threaded	Coarse	70,000	5	93516A125	00000


						2 1/2"	1/2"	13/64"	Fully Threaded	Coarse	70,000	5	93516A593	00000
						3"	1/2"	13/64"	Fully Threaded	Coarse	70,000	5	93516A595	00000
						3 1/2"	1/2"	13/64"	Fully Threaded	Coarse	70,000	1	93516A128	0000
						4"	1/2"	13/64"	Fully Threaded	Coarse	70,000	1	93516A597	0000
						4 1/2"	1/2"	13/64"	Fully Threaded	Coarse	70,000	1	93516A131	0000
						5"	1/2"	13/64"	Fully Threaded	Coarse	70,000	1	93516A132	0000




								5/16"-24

1/2"								1/2"	13/64"	Fully Threaded	Fine	70,000	5	93516A135	0000


3/4"	1/2"							13/64"	Fully Threaded	Fine	70,000	5	93516A136	00000
1"	1/2"							13/64"	Fully Threaded	Fine	70,000	5	93516A137	00000
1 1/2"	1/2"	13/64"						Fully Threaded	Fine	70,000	1	93516A139	0000




		3/8"-16

		1/2"	9/16"					15/64"	Fully Threaded	Coarse	70,000	10	93516A620	00000


		5/8"	9/16"					15/64"	Fully Threaded	Coarse	70,000	5	93516A141	0000
		3/4"	9/16"					15/64"	Fully Threaded	Coarse	70,000	10	93516A622	00000
		1"	9/16"					15/64"	Fully Threaded	Coarse	70,000	5	93516A624	00000
		1 1/8"	9/16"					15/64"	Fully Threaded	Coarse	70,000	5	93516A143	00000
		1 1/4"	9/16"					15/64"	Fully Threaded	Coarse	70,000	5	93516A626	00000
		1 1/2"	9/16"					15/64"	Fully Threaded	Coarse	70,000	5	93516A628	00000
		1 3/4"	9/16"					15/64"	Fully Threaded	Coarse	70,000	5	93516A630	00000
		2"	9/16"					15/64"	Fully Threaded	Coarse	70,000	5	93516A632	00000
		2 1/4"	9/16"					15/64"	Fully Threaded	Coarse	70,000	1	93516A144	0000
		2 1/2"	9/16"					15/64"	Fully Threaded	Coarse	70,000	1	93516A634	0000


		2 3/4"	9/16"					15/64"	Fully Threaded	Coarse	70,000	1	93516A145	0000
		3"	9/16"					15/64"	Fully Threaded	Coarse	70,000	1	93516A635	0000
		3 1/4"	9/16"					15/64"	Fully Threaded	Coarse	70,000	1	93516A146	0000
		3 1/2"	9/16"					15/64"	Fully Threaded	Coarse	70,000	1	93516A147	0000
		4"	9/16"					15/64"	Fully Threaded	Coarse	70,000	1	93516A638	0000
		4 1/2"	9/16"					15/64"	Fully Threaded	Coarse	70,000	1	93516A148	0000
		4 3/4"	9/16"					15/64"	Fully Threaded	Coarse	70,000	1	93516A149	0000
		5"	9/16"	15/64"				Fully Threaded	Coarse	70,000	1	93516A640	0000
		5 1/2"	9/16"	15/64"	Fully Threaded			Coarse	70,000	1	93516A151	0000
		6"	9/16"	15/64"	Fully Threaded			Coarse	70,000	1	93516A644	0000




				3/8"-24

				3/4"	9/16"			15/64"	Fully Threaded	Fine	70,000	5	93516A152	00000


				7/8"	9/16"			15/64"	Fully Threaded	Fine	70,000	1	93516A153	0000
				1"	9/16"			15/64"	Fully Threaded	Fine	70,000	1	93516A154	0000
				1 1/4"	9/16"			15/64"	Fully Threaded	Fine	70,000	1	93516A155	0000
				1 1/2"	9/16"			15/64"	Fully Threaded	Fine	70,000	1	93516A156	0000
				2"	9/16"			15/64"	Fully Threaded	Fine	70,000	1	93516A158	0000




								7/16"-14

								3/4"	5/8"	17/64"	Fully Threaded	Coarse	70,000	1	93516A159	0000


								1 1/4"	5/8"	17/64"	Fully Threaded	Coarse	70,000	1	93516A162	0000
								2"	5/8"	17/64"	Fully Threaded	Coarse	70,000	1	93516A165	0000
						2 1/2"		5/8"	17/64"	Fully Threaded	Coarse	70,000	1	93516A166	0000
						3"	5/8"	17/64"	Fully Threaded	Coarse	70,000	1	93516A167	0000




								1/2"-13

								1/2"	3/4"	5/16"	Fully Threaded	Coarse	70,000	1	93516A168	0000


5/8"	3/4"							5/16"	Fully Threaded	Coarse	70,000	1	93516A169	0000
3/4"	3/4"							5/16"	Fully Threaded	Coarse	70,000	1	93516A711	0000
7/8"	3/4"							5/16"	Fully Threaded	Coarse	70,000	1	93516A171	0000
1"	3/4"							5/16"	Fully Threaded	Coarse	70,000	1	93516A712	0000
1 1/4"	3/4"							5/16"	Fully Threaded	Coarse	70,000	1	93516A714	0000
1 1/2"	3/4"							5/16"	Fully Threaded	Coarse	70,000	1	93516A716	0000
1 3/4"	3/4"							5/16"	Fully Threaded	Coarse	70,000	1	93516A718	0000
2"	3/4"							5/16"	Fully Threaded	Coarse	70,000	1	93516A720	0000
2 1/4"	3/4"							5/16"	Fully Threaded	Coarse	70,000	1	93516A721	0000
2 1/2"	3/4"							5/16"	Fully Threaded	Coarse	70,000	1	93516A722	0000


2 3/4"	3/4"							5/16"	Fully Threaded	Coarse	70,000	1	93516A723	0000
3"	3/4"							5/16"	Fully Threaded	Coarse	70,000	1	93516A724	0000
3 1/4"	3/4"							5/16"	Fully Threaded	Coarse	70,000	1	93516A172	0000
3 1/2"	3/4"							5/16"	Fully Threaded	Coarse	70,000	1	93516A726	0000
3 3/4"	3/4"							5/16"	Fully Threaded	Coarse	70,000	1	93516A173	0000
4"	3/4"							5/16"	Fully Threaded	Coarse	70,000	1	93516A728	00000
4 1/2"	3/4"							5/16"	Fully Threaded	Coarse	70,000	1	93516A174	00000
5"	3/4"							5/16"	Fully Threaded	Coarse	70,000	1	93516A734	00000
5 1/2"	3/4"							5/16"	Fully Threaded	Coarse	70,000	1	93516A175	00000
6"	3/4"							5/16"	Fully Threaded	Coarse	70,000	1	93516A738	00000


6 1/2"	3/4"							5/16"	Partially Threaded	Coarse	70,000	1	93516A176	00000
7"	3/4"							5/16"	Partially Threaded	Coarse	70,000	1	93516A177	00000
7 1/2"	3/4"							5/16"	Partially Threaded	Coarse	70,000	1	93516A178	00000




		1/2"-20

		1"	3/4"					5/16"	Fully Threaded	Fine	70,000	1	93516A197	0000


		1 1/2"	3/4"					5/16"	Fully Threaded	Fine	70,000	1	93516A198	0000
		2"	3/4"					5/16"	Fully Threaded	Fine	70,000	1	93516A201	0000
		3"	3/4"					5/16"	Fully Threaded	Fine	70,000	1	93516A202	00000




								5/8"-11

				3/4"				15/16"	25/64"	Fully Threaded	Coarse	70,000	1	93516A203	0000


				1"	15/16"			25/64"	Fully Threaded	Coarse	70,000	1	93516A204	0000
				1 1/4"	15/16"			25/64"	Fully Threaded	Coarse	70,000	1	93516A205	0000
				1 3/4"	15/16"			25/64"	Fully Threaded	Coarse	70,000	1	93516A206	00000
				2"	15/16"			25/64"	Fully Threaded	Coarse	70,000	1	93516A752	00000
				2 1/4"	15/16"			25/64"	Fully Threaded	Coarse	70,000	1	93516A753	00000
				2 3/4"	15/16"			25/64"	Fully Threaded	Coarse	70,000	1	93516A207	00000
				3"	15/16"			25/64"	Fully Threaded	Coarse	70,000	1	93516A756	00000
				3 1/4"	15/16"			25/64"	Fully Threaded	Coarse	70,000	1	93516A208	00000
				3 1/2"	15/16"			25/64"	Fully Threaded	Coarse	70,000	1	93516A209	00000
				4"	15/16"			25/64"	Fully Threaded	Coarse	70,000	1	93516A760	00000


				4 1/2"	15/16"	25/64"	Fully Threaded	Coarse	70,000	1	93516A212	00000
				4 3/4"	15/16"	25/64"	Fully Threaded	Coarse	70,000	1	93516A213	00000
				5"	15/16"	25/64"	Fully Threaded	Coarse	70,000	1	93516A214	00000
				5 1/2"	15/16"	25/64"	Partially Threaded	Coarse	70,000	1	93516A215	00000
				6"	15/16"	25/64"	Fully Threaded	Coarse	70,000	1	93516A216	00000




						3/4"-10

						1 1/2"	1 1/8"	15/32"	Fully Threaded	Coarse	70,000	1	93516A780	00000


						1 3/4"	1 1/8"	15/32"	Fully Threaded	Coarse	70,000	1	93516A217	00000
						2"	1 1/8"	15/32"	Fully Threaded	Coarse	70,000	1	93516A782	00000
						2 1/4"	1 1/8"	15/32"	Fully Threaded	Coarse	70,000	1	93516A218	00000
						2 1/2"	1 1/8"	15/32"	Fully Threaded	Coarse	70,000	1	93516A219	00000
						3"	1 1/8"	15/32"	Fully Threaded	Coarse	70,000	1	93516A222	00000
						4"	1 1/8"	15/32"	Fully Threaded	Coarse	70,000	1	93516A226	00000
						5"	1 1/8"	15/32"	Partially Threaded	Coarse	70,000	1	93516A228	00000
						6"	1 1/8"	15/32"	Partially Threaded	Coarse	70,000	1	93516A231	00000

Bronze Socket Head Screws

Stronger than brass screws and more corrosion resistant. These screws are often used in marine environments, industrial pumps, and valves. The deep, six-point socket keeps hex keys from slipping out and damaging the drive.

Length is measured from under the head.

Silicon Bronze—More resistant to salt water than brass screws. They're also stronger and more resistant to abrasion and wear.

		Head
	Lg.	Dia.	Ht.	Threading	Thread Spacing	Tensile Strength, psi	Pkg. Qty.		Pkg.
Silicon Bronze







				1/4"-20

				3/4"	3/8"	1/4"	Fully Threaded	Coarse	70,000	1	97928A105	00000


				1"	3/8"	1/4"	Fully Threaded	Coarse	70,000	1	97928A110	0000




						5/16"-18

						3/4"	15/32"	5/16"	Fully Threaded	Coarse	70,000	1	97928A130	0000


						1"	15/32"	5/16"	Fully Threaded	Coarse	70,000	1	97928A135	0000




								3/8"-16

								3/4"	9/16"	3/8"	Fully Threaded	Coarse	70,000	1	97928A210	0000


								1"	9/16"	3/8"	Fully Threaded	Coarse	70,000	1	97928A215	0000