The Screw,externally Relieved Body, cataloged under National Stock Number 5305-01-140-4547, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 23 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-140-4547 |
| Primary Part Number | 12308985 |
| Item Name | Screw,externally Relieved Body |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Fourth Diameter From Head | 0.375 INCHES NOMINAL0.375 INCHES NOMINAL IN |
| Width Across Flats | 0.250 INCHES NOMINAL0.250 INCHES NOMINAL IN |
| Head Height | 0.302 INCHES MINIMUM AND 0.302 INCHES MINIMUM AND 0.312 INCHES MAXIMUM0.312 INCHES MAXIMUM IN |
| Fastener Length | 4.090 INCHES MINIMUM AND 4.090 INCHES MINIMUM AND 4.130 INCHES MAXIMUM4.130 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416,TYPE 2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALLQQ-P-416,TYPE 2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.502 INCHES MINIMUM AND 0.502 INCHES MINIMUM AND 0.532 INCHES MAXIMUM0.532 INCHES MAXIMUM IN |
| Hardness Rating | 32.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL43.0 ROCKWELL C MAXIMUM OVERALL |
| Material Document and Classification | MIL-S-21472 MIL SPEC SINGLE MATERIAL RESPONSE OVERALLMIL-S-21472 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| First Diameter From Head | 0.477 INCHES NOMINAL0.477 INCHES NOMINAL IN |
| Distance From Largest Bearing Surface of Head to End of Second Diameter | 3.495 INCHES NOMINAL3.495 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.375 INCHES0.375 INCHES IN |
| Distance From Largest Bearing Surface of Head to End of Third Diameter | 3.588 INCHES NOMINAL3.588 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HANDRIGHT-HAND |
| Second Diameter From Head | 0.496 INCHES NOMINAL0.496 INCHES NOMINAL IN |
| Distance From Largest Bearing Surface of Head to End of First Diameter | 0.093 INCHES NOMINAL0.093 INCHES NOMINAL IN |
| Externally Relieved Body Diameter Quantity | 44 |
| Surface Treatment | CADMIUM OVERALLCADMIUM OVERALL |
| Thread Class | 3A3A |
| Thread Quantity Per Inch | 1616 |
| Material | STEEL OVERALL |
| Distance From Largest Bearing Surface of Head to End of Fourth Diameter | 4.090 INCHES NOMINAL4.090 INCHES NOMINAL IN |
| Third Diameter From Head | 0.291 INCHES NOMINAL0.291 INCHES NOMINAL IN |
| Head Diameter | 0.729 INCHES MINIMUM AND 0.729 INCHES MINIMUM AND 0.750 INCHES MAXIMUM0.750 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 12308985 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
NSN 5305-01-140-4547 is a Screw,externally Relieved Body, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-140-4547 has 1 manufacturer part number on file: 12308985 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 12308985: Fourth Diameter From Head: 0.375 INCHES NOMINAL0.375 INCHES NOMINAL IN; Width Across Flats: 0.250 INCHES NOMINAL0.250 INCHES NOMINAL IN; Head Height: 0.302 INCHES MINIMUM AND 0.302 INCHES MINIMUM AND 0.312 INCHES MAXIMUM0.312 INCHES MAXIMUM IN; Fastener Length: 4.090 INCHES MINIMUM AND 4.090 INCHES MINIMUM AND 4.130 INCHES MAXIMUM4.130 INCHES MAXIMUM IN. 23 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.