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Machine Screw Nuts
machine-screw-nuts
Stamped with Mfr. ID plus NC and "F467U"
Chemical and physical reports available upon request at no charge. /Asset/1162_Finished-Hex-Nuts.jpg
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.
Square Machine Screw Nuts
(13)- Square machine screw nuts shall have tops and bottoms flat, without chamfer. The bearing surface shall be perpendicular to the axis of the threaded hole pitch cylinder within a tolerance of 4 deg.
- Where specifying nominal size in decimals, zeros preceding decimal and in the fourth decimal place shall be omitted.
Hex Machine Screw Nuts
(13)- Hexagon machine screw nuts shall have tops flat with chamfered corners. Diameter of top circle shall be equal to the maximum width across flats within a tolerance of minus 15 percent. The bearing surface shall be perpendicular to the axis of the threaded hole pitch cylinder within a tolerance of 4 deg.
- Bottoms of hexagon machine screw nuts are normally flat, but for special purposes may be chamfered, if so specified by purchaser.
- Where specifying nominal size in decimals, zeros preceding decimal and in the fourth decimal place shall be omitted.
Nickel Copper 400 Finished Nuts
(6) Manufactured to MIL-S-1222H amend. 3 and ASTM F467 by Robbins Manufacturing Co., Inc.Stamped with Mfr. ID plus NC and "F467U"
Chemical and physical reports available upon request at no charge. /Asset/1162_Finished-Hex-Nuts.jpg
Machine Screw Nuts
(19) 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.
