The Nut,plain,square, cataloged under National Stock Number 5310-00-012-5557, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Federal Specifications Promulgated by General Services Administration Washington DC. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-012-5557 |
| Primary Part Number | FFB571TYPEB1 |
| Item Name | Nut,plain,square |
| FSC / FSG | 5310 / 53 — No Item Name Available |
| Manufacturer | Federal Specifications Promulgated by General Services Administration Washington DC |
| Status | ACTIVE |
| Thread Class | 2B |
| Nut Height | 0.632 INCHES MINIMUM AND 0.680 INCHES MAXIMUM IN |
| Nominal Thread Size | 0.750 INCHES IN |
| Thread Series | UNIFIED NATIONAL COARSE (UNC) |
| Bearing Surface Type | WASHER FACED |
| Thread Quantity Per Inch | 10 |
| Surface Treatment | CADMIUM OR ZINC OVERALL |
| Material | STEEL OVERALL |
| Thread Direction | RIGHT-HAND |
| Nut Style | SQUARE |
| Width Across Flats | 1.088 INCHES MINIMUM AND 1.1250 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| FFB571TYPEB1 | Federal Specifications Promulgated by General Services Administration Washington DC (USA) |
NSN 5310-00-012-5557 is a Nut,plain,square, manufactured by Federal Specifications Promulgated by General Services Administration Washington DC, classified under FSC 5310 (No Item Name Available). Status: active.
NSN 5310-00-012-5557 has 1 cross-referenced part number: FFB571TYPEB1 (Federal Specifications Promulgated by General Services Administration Washington DC).
There are 6 known substitutes for 5310-00-012-5557: 5310-00-010-5605, 5310-00-010-5606, 5310-00-010-5609 and 3 more. Verify interchangeability with system specifications before substitution.
Key specifications for FFB571TYPEB1: Thread Class: 2B; Nut Height: 0.632 INCHES MINIMUM AND 0.680 INCHES MAXIMUM IN; Nominal Thread Size: 0.750 INCHES IN; Thread Series: UNIFIED NATIONAL COARSE (UNC). 11 total characteristics are documented in the Federal Logistics Information System.