The Bolt,square Neck, cataloged under National Stock Number 5306-00-012-0231, is classified within Federal Supply Class 5306 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Fastenal Company. Government technical data includes 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 13 commercial cross-references from 13 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 | 5306-00-012-0231 |
| Primary Part Number | 21260 |
| Item Name | Bolt,square Neck |
| FSC / FSG | 5306 / 53 — No Item Name Available |
| Manufacturer | Fastenal Company |
| Status | CANCELLED |
| Thread Quantity Per Inch | 18 |
| Minimum Tensile Strength | 55000 POUNDS PER SQUARE INCH LBS |
| Thread Direction | RIGHT-HAND |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Material Document and Classification | SAE GR 1 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Surface Treatment | ZINC OVERALL |
| Head Diameter | 0.688 INCHES MINIMUM AND 0.719 INCHES MAXIMUM IN |
| Fastener Length | 1.719 INCHES MINIMUM AND 1.781 INCHES MAXIMUM IN |
| Material | STEEL OVERALL |
| Head Style | BUTTON |
| Thread Class | 2A A |
| Thread Length | 0.875 INCHES MINIMUM IN |
| Neck Width | 0.307 INCHES MINIMUM AND 0.324 INCHES MAXIMUM IN |
| Neck Length | 0.156 INCHES MINIMUM AND 0.187 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | ASTM B633 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Head Height | 0.156 INCHES MINIMUM AND 0.176 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 21260 PRIMARY | Fastenal Company (USA) |
| 120231 | Diamond Reo Truck Co (USA) |
| NASM35751 | Aerospace Industries Association of America Inc |
| 5306000120231 | E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
| 2349867 | Ford Motor Co Ford Parts and Service Div Government Part Sales (USA) |
| 120231 | Chrysler Realty Company Llc Dba Daimler Chrysler (USA) |
| FF-B-584 | Federal Specifications Promulgated by General Services Administration Washington DC (USA) |
| MS35751-44 | Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M |
| FF-B-584 TY1CL1STAGRA | General Services Administration Federal Supply Service (USA) |
| 120231 | Army Weapons Command Attn Amswe-Ree-S (USA) |
| 120231 | General Motors Corp (USA) |
| ASME B18.5 | The American Society of Mechanical Engineers (USA) |
| 5305PL0827562 | Jednolity Indeks Materialowy - Uniform Material Index (POL) |
NSN 5306-00-012-0231 is a Bolt,square Neck, manufactured by Fastenal Company, classified under FSC 5306 (No Item Name Available). Status: cancelled.
NSN 5306-00-012-0231 has 13 cross-referenced part numbers: 21260 (Fastenal Company), 120231 (Diamond Reo Truck Co), NASM35751 (Aerospace Industries Association of America Inc), 5306000120231 (E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales), 2349867 (Ford Motor Co Ford Parts and Service Div Government Part Sales) and 8 more.
There are 12 known substitutes for 5306-00-012-0231: 5306-00-054-8021, 5306-00-010-9115, 5306-00-012-0955 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for 21260: Thread Quantity Per Inch: 18; Minimum Tensile Strength: 55000 POUNDS PER SQUARE INCH LBS; Thread Direction: RIGHT-HAND; Thread Series Designator: UNIFIED NATIONAL COARSE (UNC). 17 total characteristics are documented in the Federal Logistics Information System.
NSN 5306-00-012-0231 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.