The Bolt,machine, cataloged under National Stock Number 5306-00-281-3741, 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 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references 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 | 5306-00-281-3741 |
| Primary Part Number | MILB857TYPE2GRADE2 |
| Item Name | Bolt,machine |
| 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 |
| Surface Treatment | ZINC OVERALL |
| Hardness Rating | 95.0 ROCKWELL B MAXIMUM OVERALL |
| Nondefinitive Spec/std Data | 2 TYPE AND 2 GRADE |
| Thread Direction | RIGHT-HAND |
| Material Document and Classification | SAE GR 2 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Fastener Length | 3.000 INCHES NOMINAL IN |
| Thread Length | 2.250 INCHES MINIMUM IN |
| Nominal Thread Diameter | 1.000 INCHES IN |
| Width Between Flats | 1.450 INCHES MINIMUM AND 1.500 INCHES MAXIMUM IN |
| Minimum Tensile Strength | 55000 POUNDS PER SQUARE INCH LBS |
| Thread Quantity Per Inch | 8 |
| Head Height | 0.591 INCHES MINIMUM AND 0.627 INCHES MAXIMUM IN |
| Thread Class | 2A A |
| Head Style | HEXAGON |
| Surface Treatment Document and Classification | QQ-Z-325,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Material | STEEL OVERALL |
| Acquisition Status | CANCELLED |
| Successor | 5306-00-272-5104 |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| MILB857TYPE2GRADE2 | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| M222B2N16C248GCNZE | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
NSN 5306-00-281-3741 is a Bolt,machine, 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 5306-00-281-3741 has 2 cross-referenced part numbers: MILB857TYPE2GRADE2 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), M222B2N16C248GCNZE (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).
There are 12 known substitutes for 5306-00-281-3741: 5306-00-266-0261, 5306-00-272-5104, 5306-00-275-9800 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for MILB857TYPE2GRADE2: Surface Treatment: ZINC OVERALL; Hardness Rating: 95.0 ROCKWELL B MAXIMUM OVERALL; Nondefinitive Spec/std Data: 2 TYPE AND 2 GRADE; Thread Direction: RIGHT-HAND. 17 total characteristics are documented in the Federal Logistics Information System.
NSN 5306-00-281-3741 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.