The Setscrew, cataloged under National Stock Number 5305-00-249-0278, is classified within Federal Supply Class 5305 (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 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: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-249-0278 |
| Primary Part Number | MILB933TYPEG |
| Item Name | Setscrew |
| FSC / FSG | 5305 / 53 — No Item Name Available |
| Manufacturer | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-Z-325,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Head Style | HEADLESS (SETSCREW) |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Thread Class | 2A A |
| Material | STEEL COMP 4037 OR STEEL COMP 4137 OR STEEL COMP 4140 OR STEEL COMP 8630 OR STEEL COMP 8740 OVERALL |
| Nondefinitive Spec/std Data | 1 TYPE AND 4 STYLE |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Thread Quantity Per Inch | 18 |
| Width Across Flats | 0.156 INCHES NOMINAL IN |
| Thread Length | 0.765 INCHES MAXIMUM IN |
| Hardness Rating | 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM OVERALL |
| Point Style | CUP |
| Fastener Length | 0.735 INCHES MINIMUM AND 0.765 INCHES MAXIMUM IN |
| Surface Treatment | ZINC OVERALL |
| Material Document and Classification | 66 FED STD ALL MATERIAL RESPONSES OVERALL |
| Internal Drive Style | HEXAGON |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| MILB933TYPEG | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
NSN 5305-00-249-0278 is a Setscrew, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 5305 (No Item Name Available). Status: active.
NSN 5305-00-249-0278 has 1 cross-referenced part number: MILB933TYPEG (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).
There are 12 known substitutes for 5305-00-249-0278: 5305-00-249-0198, 5305-00-249-0209, 5305-00-249-0210 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for MILB933TYPEG: Surface Treatment Document and Classification: QQ-Z-325,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Head Style: HEADLESS (SETSCREW); Thread Direction: RIGHT-HAND; Nominal Thread Diameter: 0.312 INCHES IN. 17 total characteristics are documented in the Federal Logistics Information System.