The Bolt,square Neck, cataloged under National Stock Number 5306-00-274-8080, is classified within Federal Supply Class 5306 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 14 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 5306-00-274-8080 |
| Primary Part Number | MILH55053 |
| Item Name | Bolt,square Neck |
| FSC / FSG | 5306 / 53 — No Item Name Available |
| Manufacturer | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| Status | CANCELLED |
| Thread Direction | RIGHT-HAND |
| Head Style | FLAT COUNTERSUNK |
| Thread Quantity Per Inch | 10 |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Countersink Angle | 80.0 DEGREES MINIMUM AND 82.0 DEGREES MAXIMUM |
| Nominal Thread Diameter | 0.750 INCHES IN |
| Minimum Tensile Strength | 55000 POUNDS PER SQUARE INCH LBS |
| Fastener Length | 2.500 INCHES NOMINAL IN |
| Thread Length | 1.750 INCHES MINIMUM IN |
| Neck Width | 0.750 INCHES MINIMUM AND 0.765 INCHES MAXIMUM IN |
| Thread Class | 2A A |
| Head Diameter | 1.172 INCHES MINIMUM AND 1.252 INCHES MAXIMUM IN |
| Material | STEEL OVERALL |
| Neck Length | 0.453 INCHES MINIMUM AND 0.493 INCHES MAXIMUM IN |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| MILH55053 | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
NSN 5306-00-274-8080 is a Bolt,square Neck, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 5306 (No Item Name Available). Status: cancelled.
NSN 5306-00-274-8080 has 1 cross-referenced part number: MILH55053 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).
There are 12 known substitutes for 5306-00-274-8080: 5975-00-223-1852, 5975-00-244-6118, 5975-00-262-9155 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for MILH55053: Thread Direction: RIGHT-HAND; Head Style: FLAT COUNTERSUNK; Thread Quantity Per Inch: 10; Thread Series Designator: UNIFIED NATIONAL COARSE (UNC). 14 total characteristics are documented in the Federal Logistics Information System.
NSN 5306-00-274-8080 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.