The Screw,externally Relieved Body, cataloged under National Stock Number 5305-01-142-9135, 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 18 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 | 5305-01-142-9135 |
| Primary Part Number | 12310448 |
| Item Name | Screw,externally Relieved Body |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Head Height | 0.150 INCHES NOMINAL0.150 INCHES NOMINAL IN |
| Fastener Length | 0.415 INCHES NOMINAL0.415 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | NAS 1283 ASSN STD SINGLE TREATMENT RESPONSE POINTNAS 1283 ASSN STD SINGLE TREATMENT RESPONSE POINT |
| Thread Length | 0.280 INCHES NOMINAL0.280 INCHES NOMINAL IN |
| First Diameter From Head | 0.187 INCHES NOMINAL0.187 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.250 INCHES0.250 INCHES IN |
| Head Style | HEXAGONHEXAGON |
| Thread Direction | RIGHT-HANDRIGHT-HAND |
| Width Between Flats | 0.428 INCHES NOMINAL0.428 INCHES NOMINAL IN |
| Distance From Largest Bearing Surface of Head to End of First Diameter | 0.135 INCHES NOMINAL0.135 INCHES NOMINAL IN |
| Locking Feature | STRIP THREADSSTRIP THREADS |
| Externally Relieved Body Diameter Quantity | 11 |
| Surface Treatment | PASSIVATE OVERALLPASSIVATE OVERALL |
| Internal Drive Style | SLOTSLOT |
| Thread Class | 2A2A |
| Thread Quantity Per Inch | 2828 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNFUNF |
| 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 |
|---|---|
| 12310448 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
NSN 5305-01-142-9135 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 5305-01-142-9135 has 1 manufacturer part number on file: 12310448 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 12310448: Head Height: 0.150 INCHES NOMINAL0.150 INCHES NOMINAL IN; Fastener Length: 0.415 INCHES NOMINAL0.415 INCHES NOMINAL IN; Surface Treatment Document and Classification: NAS 1283 ASSN STD SINGLE TREATMENT RESPONSE POINTNAS 1283 ASSN STD SINGLE TREATMENT RESPONSE POINT; Thread Length: 0.280 INCHES NOMINAL0.280 INCHES NOMINAL IN. 18 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.