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Made in U.S.A.
All head hex cap screws manufactured by Robbins Mfg. Co. All hex head are made of 304 stainless steel. Heads are marked with MS radial lines, Robbins "R" trademark, and "304" as the material. Chemicals and physicals with paper work showing full conformance to MS specifications are available for all items.

Hex head cap screws
  • Material to procurement spec FF-S-85; Fed Std 66; QQ-S-763.
  • Mechanical properties (tensile, yield, elongation, reduction of area, and hardness) meet all requirements of MS specs and FF-S-85.
  • Dimensions in accordance with MS drawings and ANSI B18.2.1; thread dimensions per Fed Std H28.
  • Passivated in accordance with QQ-P-35 with magnetic permeability of 2.0 or less tested per ASTM A 342.
  • Heat markings, including manufacture's logo, in accordance with FF-S-85, Mil-HDBK 131, and MS specs.
  • Produced under strict guidelines of quality assurance program to requirements of ISO 9002.
1222_head-Cap-Screws
Unit of Measure
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Item #

Description

Military Specification

Thread Size

Length

Thread Type

Stamping

item-5509 N/A T304 Fine Thread Hex Head Cap Screw, 5/8" N/A MS 35308 N/A 5/16-24 N/A 5/8 in N/A Fine N/A -331
item-5510 N/A T304 Fine Thread Hex Head Cap Screw, 3/4" N/A MS 35308 N/A 5/16-24 N/A 3/4 in N/A Fine N/A -332
item-5511 N/A T304 Fine Thread Hex Head Cap Screw, 7/8" N/A MS 35308 N/A 5/16-24 N/A 7/8 in N/A Fine N/A -333
item-5512 N/A T304 Fine Thread Hex Head Cap Screw, 1" N/A MS 35308 N/A 5/16-24 N/A 1 in N/A Fine N/A -334
item-5513 N/A T304 Fine Thread Hex Head Cap Screw, 1-1/8" N/A MS 35308 N/A 5/16-24 N/A 1-1/8 in N/A Fine N/A -335
item-5514 N/A T304 Fine Thread Hex Head Cap Screw, 1-1/4" N/A MS 35308 N/A 5/16-24 N/A 1-1/4 in N/A Fine N/A -336
item-5515 N/A T304 Fine Thread Hex Head Cap Screw, 1-3/8" N/A MS 35308 N/A 5/16-24 N/A 1-3/8 in N/A Fine N/A -337
item-5516 N/A T304 Fine Thread Hex Head Cap Screw, 1-1/2" N/A MS 35308 N/A 5/16-24 N/A 1-1/2 in N/A Fine N/A -338
item-5517 N/A T304 Fine Thread Hex Head Cap Screw, 1-3/4" N/A MS 35308 N/A 5/16-24 N/A 1-3/4 in N/A Fine N/A -339
item-5518 N/A T304 Fine Thread Hex Head Cap Screw, 2" N/A MS 35308 N/A 5/16-24 N/A 2 in N/A Fine N/A -340
item-5519 N/A T304 Fine Thread Hex Head Cap Screw, 2-1/4" N/A MS 35308 N/A 5/16-24 N/A 2-1/4 in N/A Fine N/A -341
item-5520 N/A T304 Fine Thread Hex Head Cap Screw, 2-1/2" N/A MS 35308 N/A 5/16-24 N/A 2-1/2 in N/A Fine N/A -342
item-5521 N/A T304 Fine Thread Hex Head Cap Screw, 2-3/4" N/A MS 35308 N/A 5/16-24 N/A 2-3/4 in N/A Fine N/A -343
item-5522 N/A T304 Fine Thread Hex Head Cap Screw, 3-1/2" N/A MS 35308 N/A 5/16-24 N/A 3-1/2 in N/A Fine N/A -346
item-5523 N/A T304 Fine Thread Hex Head Cap Screw, 5/8" N/A MS 35308 N/A 3/8-24 N/A 5/8 in N/A Fine N/A -357
item-5524 N/A T304 Fine Thread Hex Head Cap Screw, 3/4" N/A MS 35308 N/A 3/8-24 N/A 3/4 in N/A Fine N/A -358
item-5525 N/A T304 Fine Thread Hex Head Cap Screw, 7/8" N/A MS 35308 N/A 3/8-24 N/A 7/8 in N/A Fine N/A -359
item-5526 N/A T304 Fine Thread Hex Head Cap Screw, 1" N/A MS 35308 N/A 3/8-24 N/A 1 in N/A Fine N/A -360
item-5527 N/A T304 Fine Thread Hex Head Cap Screw, 1-1/8" N/A MS 35308 N/A 3/8-24 N/A 1-1/8 in N/A Fine N/A -361
item-5528 N/A T304 Fine Thread Hex Head Cap Screw, 1-1/4" N/A MS 35308 N/A 3/8-24 N/A 1-1/4 in N/A Fine N/A -362
item-5529 N/A T304 Fine Thread Hex Head Cap Screw, 1-3/8" N/A MS 35308 N/A 3/8-24 N/A 1-3/8 in N/A Fine N/A -363
item-5530 N/A T304 Fine Thread Hex Head Cap Screw, 1-1/2" N/A MS 35308 N/A 3/8-24 N/A 1-1/2 in N/A Fine N/A -364
item-5531 N/A T304 Fine Thread Hex Head Cap Screw, 1-3/4" N/A MS 35308 N/A 3/8-24 N/A 1-3/4 in N/A Fine N/A -365
item-5532 N/A T304 Fine Thread Hex Head Cap Screw, 2" N/A MS 35308 N/A 3/8-24 N/A 2 in N/A Fine N/A -366
item-5533 N/A T304 Fine Thread Hex Head Cap Screw, 2-1/4" N/A MS 35308 N/A 3/8-24 N/A 2-1/4 in N/A Fine N/A -367
Unit of Measure
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