The Bolt,square Neck, cataloged under National Stock Number 5306-00-059-1224, is classified within Federal Supply Class 5306 (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 17 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. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-059-1224 |
| Primary Part Number | FFB571 |
| Item Name | Bolt,square Neck |
| FSC / FSG | 5306 / 53 — No Item Name Available |
| Manufacturer | Federal Specifications Promulgated by General Services Administration Washington DC |
| Status | ACTIVE |
| Nondefinitive Spec/std Data | C2 TYPE |
| Head Style | BUTTON |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Minimum Tensile Strength | 48000 POUNDS PER SQUARE INCH LBS |
| Fastener Length | 1.250 INCHES NOMINAL IN |
| Head Height | 0.125 INCHES NOMINAL IN |
| Head Diameter | 0.563 INCHES NOMINAL IN |
| Features Provided | SQUARE NUT |
| Thread Quantity Per Inch | 20 |
| Thread Class | 2A A |
| Thread Length | 0.625 INCHES MINIMUM IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Thread Direction | RIGHT-HAND |
| Neck Length | 0.219 INCHES NOMINAL IN |
| Neck Width | 0.250 INCHES NOMINAL IN |
| Material Document and Classification | FF-B-571 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Material | STEEL OVERALL |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| FFB571 | Federal Specifications Promulgated by General Services Administration Washington DC (USA) |
NSN 5306-00-059-1224 is a Bolt,square Neck, manufactured by Federal Specifications Promulgated by General Services Administration Washington DC, classified under FSC 5306 (No Item Name Available). Status: active.
NSN 5306-00-059-1224 has 1 cross-referenced part number: FFB571 (Federal Specifications Promulgated by General Services Administration Washington DC).
There is 1 known substitute for 5306-00-059-1224: 5306-00-582-5952. Verify interchangeability with system specifications before substitution.
Key specifications for FFB571: Nondefinitive Spec/std Data: C2 TYPE; Head Style: BUTTON; Thread Series Designator: UNIFIED NATIONAL COARSE (UNC); Minimum Tensile Strength: 48000 POUNDS PER SQUARE INCH LBS. 17 total characteristics are documented in the Federal Logistics Information System.