The Ring,clamp, cataloged under National Stock Number 1240-01-074-0501, is classified within Federal Supply Class 1240 (Optical Sighting and Ranging Equipment) of the Fire Control Equipment group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1240-01-074-0501 |
| Primary Part Number | 12266971 |
| Item Name | Ring,clamp |
| FSC / FSG | 1240 / 12 — Optical Sighting and Ranging Equipment |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| General Characteristics Item Description | MATERIAL:AL 6061-T6,2011-T3,2024-T3,T4; OVERALL DIA 2.000 IN; OVERALL WIDTH 0.310 IN IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 1240-01-074-0501 is a Ring,clamp, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 1240, Optical Sighting and Ranging Equipment. Status: active.
NSN 1240-01-074-0501 has 2 manufacturer part numbers on file: 048175 (L3 Technologies, Inc. Div L3 Keo), 12266971 (U S Army Tank Automotive Command Amsta-Im-Mm).
1 possible match (shared part number, not a government interchangeability claim): 5950-01-236-0779. Verify interchangeability with system specifications before substitution.
Key specifications for 12266971: General Characteristics Item Description: MATERIAL:AL 6061-T6,2011-T3,2024-T3,T4; OVERALL DIA 2.000 IN; OVERALL WIDTH 0.310 IN IN. 1 specification is 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.