The Nut,self-Locking,hexagon, cataloged under National Stock Number 5310-00-731-3564, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Sps Technologies, Llc Dba PB Fasteners. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-731-3564 |
| Primary Part Number | 21FK632 |
| Item Name | Nut,self-Locking,hexagon |
| FSC / FSG | 5310 / 53 — No Item Name Available |
| Manufacturer | Sps Technologies, Llc Dba PB Fasteners |
| Status | ACTIVE |
| Thread Direction | RIGHT-HAND |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Bearing Surface Type | FLAT |
| Nominal Thread Size | 0.138 INCHES IN |
| Thread Quantity Per Inch | 32 |
| Thread Series | UNIFIED NATIONAL COARSE (UNC) |
| Nut Height | 0.121 INCHES MINIMUM AND 0.141 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Width Across Flats | 0.313 INCHES MAXIMUM IN |
| Thread Class | 2B |
| Nut Style | HEXAGON |
| Material | STEEL COMP 1117 OVERALL |
| Material Document and Classification | AISI ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 5310-00-731-3564 is a Nut,self-Locking,hexagon, manufactured by Sps Technologies, Llc Dba PB Fasteners, classified under FSC 5310 (No Item Name Available). Status: active.
NSN 5310-00-731-3564 has 2 cross-referenced part numbers: 80103 (Federal Screw Products, Inc.), 21FK632 (Sps Technologies, Llc Dba PB Fasteners).
There are 8 known substitutes for 5310-00-731-3564: 6220-00-736-7747, 5310-00-807-1465, 4820-01-210-5825 and 5 more. Verify interchangeability with system specifications before substitution.
Key specifications for 21FK632: Thread Direction: RIGHT-HAND; Locking Feature: PREVAILING TORQUE ALL METAL DESIGN; Bearing Surface Type: FLAT; Nominal Thread Size: 0.138 INCHES IN. 13 total characteristics are documented in the Federal Logistics Information System.