The Lock,sight Extension, cataloged under National Stock Number 1015-00-508-0178, is classified within Federal Supply Class 1015 (Guns, 75mm Through 125mm) of the Weapons group. The manufacturer of record is Army, United States Department of the Dba Rock Island Arsenal Jmtc. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1015-00-508-0178 |
| Primary Part Number | 8731447 |
| Item Name | Lock,sight Extension |
| FSC / FSG | 1015 / 10 — Guns, 75mm Through 125mm |
| Manufacturer | Army, United States Department of the Dba Rock Island Arsenal Jmtc |
| Status | ACTIVE |
| General Characteristics Item Description | MATERIAL IS COPPER ALLOY; OVERALLWIDTH 1.125 IN,; OVERALL LENGTH 1.750 IN.; CENTER BORE DIA. 0.50 IN. 20 UNF-2B THREADS IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 8731447 PRIMARY | Army, United States Department of the Dba Rock Island Arsenal Jmtc (USA) |
| Reference | Meaning |
|---|---|
| 1015005080178 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
| 8731447 | 5/9 Secondary reference U S Army Tank Automotive Command Amsta-Im-Mm |
NSN 1015-00-508-0178 is a Lock,sight Extension, manufactured by Army, United States Department of the Dba Rock Island Arsenal Jmtc, classified under FSC 1015, Guns, 75mm Through 125mm. Status: active.
NSN 1015-00-508-0178 has 1 manufacturer part number on file: 8731447 (Army, United States Department of the Dba Rock Island Arsenal Jmtc).
Key specifications for 8731447: General Characteristics Item Description: MATERIAL IS COPPER ALLOY; OVERALLWIDTH 1.125 IN,; OVERALL LENGTH 1.750 IN.; CENTER BORE DIA. 0.50 IN. 20 UNF-2B THREADS 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.
NSN 1015-00-508-0178 has DEMIL Code D. Demilitarization may be required before disposal or transfer to non-military entities.
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.