Made in U.S.A.

Machine screws nuts manufactured domestically by Amerifast Corp. and MRL Mfg.

All nuts are made of 304 Stainless and are stamped with Robbins "R" trademark and "304AN"; AN stands for annealed. Chemicals and physicals showing conformance to MS specifications are available on all items.
  • Material to procurement spec FF-N-836; Fed Std 66; QQ-S-763.
  • Passivated to QQ-P-35.
  • Dimensions, proof load, hardness, threads to MS specs, procurement spec FF-N-836; Fed Std H28/2; Fed Std H28/20 system 21; ANSI B18.2.2.
  • Magnetic permeability to procurement spec FF-N-836.
  • Quality assurance to procurement spec FF-N-836; Mil Std 105.
Unit of Measure

Manufacturer

Manufacturer

N/A Robbins Manufacturing Co., Inc.

Specifications

Product

N/A Finished Nut

Thread Size

N/A 1/4-20

Stamping

N/A -1

Material

N/A 304 Stainless Steel

Codes and Standards

Codes and Standards

N/A MS 51971
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