The Frame,access Hole, cataloged under National Stock Number 5340-01-061-0797, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 9 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. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-061-0797 |
| Primary Part Number | 12257531 |
| Item Name | Frame,access Hole |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Mounting Facility Diameter | 0.281 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | MIL-STD-171,FINISH 5.4.1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Overall Diameter | 4.180 INCHES NOMINAL IN |
| Mounting Method | THREADED HOLE(S) |
| Overall Thickness | 0.036 INCHES NOMINAL IN |
| Aperture Diameter | 3.700 INCHES NOMINAL IN |
| Nominal Thread Size | 0.250 INCHES IN |
| Surface Treatment | PASSIVATE OVERALL |
| Thread Quantity Per Inch | 20 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Unit of Issue | EA |
| Part Number | Manufacturer |
|---|---|
| 12257531 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
NSN 5340-01-061-0797 is a Frame,access Hole, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-061-0797 has 1 manufacturer part number on file: 12257531 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 12257531: Mounting Facility Diameter: 0.281 INCHES NOMINAL IN; Surface Treatment Document and Classification: MIL-STD-171,FINISH 5.4.1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Overall Diameter: 4.180 INCHES NOMINAL IN; Mounting Method: THREADED HOLE(S). 9 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). 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.