The Bolt,square Neck, cataloged under National Stock Number 5306-00-012-6227, 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 19 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 5306-00-012-6227 |
| Primary Part Number | FFB584 |
| Item Name | Bolt,square Neck |
| FSC / FSG | 5306 / 53 — No Item Name Available |
| Manufacturer | Federal Specifications Promulgated by General Services Administration Washington DC |
| Status | CANCELLED |
| Material Document and Classification | GM 255M,GENERAL MOTORS CORP MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Neck Width | 0.368 INCHES MINIMUM AND 0.388 INCHES MAXIMUM IN |
| Head Height | 0.188 INCHES MINIMUM AND 0.208 INCHES MAXIMUM IN |
| Neck Length | 0.188 INCHES MINIMUM AND 0.219 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | 4252-M FSCM 24617 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Material | STEEL OVERALL |
| Thread Quantity Per Inch | 16 |
| Minimum Yield Strength | 40000 POUNDS PER SQUARE INCH LBS |
| Head Style | BUTTON |
| Thread Length | 0.375 INCHES MINIMUM IN |
| Minimum Tensile Strength | 55000 POUNDS PER SQUARE INCH LBS |
| Surface Treatment | ZINC OVERALL |
| Head Diameter | 0.782 INCHES MINIMUM AND 0.844 INCHES MAXIMUM IN |
| Fastener Length | 0.750 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND |
| Thread Class | 2A A |
| Hardness Rating | 95.0 ROCKWELL B MAXIMUM OVERALL |
| Acquisition Status | CANCELLED |
| Successor | 5306-00-006-2269 (MS35751-53) |
| HAZMAT | No |
NSN 5306-00-012-6227 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: cancelled.
NSN 5306-00-012-6227 has 2 cross-referenced part numbers: FFB584 (Federal Specifications Promulgated by General Services Administration Washington DC), MT58 (Great American Industries Inc).
There are 12 known substitutes for 5306-00-012-6227: 5306-00-260-4651, 5306-00-006-2269, 5306-00-011-9430 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for FFB584: Material Document and Classification: GM 255M,GENERAL MOTORS CORP MFR REF SINGLE MATERIAL RESPONSE OVERALL; Nominal Thread Diameter: 0.375 INCHES IN; Neck Width: 0.368 INCHES MINIMUM AND 0.388 INCHES MAXIMUM IN; Head Height: 0.188 INCHES MINIMUM AND 0.208 INCHES MAXIMUM IN. 19 total characteristics are documented in the Federal Logistics Information System.
NSN 5306-00-012-6227 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.