The Bolt,square Neck, cataloged under National Stock Number 5306-00-889-2943, 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 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 4 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 | 5306-00-889-2943 |
| Primary Part Number | FF-B-584 |
| 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 |
| Thread Class | 2A A |
| Head Style | BUTTON |
| Neck Length | 0.125 INCHES MINIMUM AND 0.156 INCHES MAXIMUM IN |
| Fastener Length | 1.219 INCHES MINIMUM AND 1.281 INCHES MAXIMUM IN |
| Minimum Tensile Strength | 55000 POUNDS PER SQUARE INCH LBS |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Height | 0.125 INCHES MINIMUM AND 0.145 INCHES MAXIMUM IN |
| Head Diameter | 0.563 INCHES MINIMUM AND 0.594 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Surface Treatment Document and Classification | ASTM B633 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Material Document and Classification | SAE GR 1 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Hardness Rating | 95.0 ROCKWELL B MAXIMUM OVERALL |
| Thread Length | 0.750 INCHES MINIMUM IN |
| Surface Treatment | ZINC OVERALL |
| Material | STEEL OVERALL |
| Neck Width | 0.245 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN |
| Thread Direction | RIGHT-HAND |
| Thread Quantity Per Inch | 20 |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| FF-B-584 | Federal Specifications Promulgated by General Services Administration Washington DC (USA) |
| NASM35751 | Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M |
| MS35751-17 | Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M |
| ASME B18.5 | The American Society of Mechanical Engineers (USA) |
| FF-B-584 TY1CL1STAGR1 | General Services Administration Federal Supply Service (USA) |
| MS35751-16 | Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M |
NSN 5306-00-889-2943 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 5306-00-889-2943 has 6 cross-referenced part numbers: FF-B-584 (Federal Specifications Promulgated by General Services Administration Washington DC), NASM35751 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), MS35751-17 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), ASME B18.5 (The American Society of Mechanical Engineers), FF-B-584 TY1CL1STAGR1 (General Services Administration Federal Supply Service) and 1 more.
There are 12 known substitutes for 5306-00-889-2943: 5306-00-010-9115, 5306-00-012-0955, 5306-00-012-6227 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for FF-B-584: Thread Class: 2A A; Head Style: BUTTON; Neck Length: 0.125 INCHES MINIMUM AND 0.156 INCHES MAXIMUM IN; Fastener Length: 1.219 INCHES MINIMUM AND 1.281 INCHES MAXIMUM IN. 18 total characteristics are documented in the Federal Logistics Information System.
NSN 5306-00-889-2943 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.