The Sear, cataloged under National Stock Number 1005-00-556-4137, is classified within Federal Supply Class 1005 (Guns, Through 30mm) of the Weapons group. The manufacturer of record is Army, United States Department of the Dba Rock Island Arsenal Jmtc. Government technical data includes 8 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1005-00-556-4137 |
| Primary Part Number | 5564137 |
| Item Name | Sear |
| FSC / FSG | 1005 / 10 — Guns, Through 30mm |
| Manufacturer | Army, United States Department of the Dba Rock Island Arsenal Jmtc |
| Status | ACTIVE |
| FSC Application Data | MACHINE GUN,CAL .30 |
| Mechanism Held | FIRING PIN |
| Weapon Model Number | M1919A6 |
| Material Document and Classification | QQ-S-624, COMPOSITION 4042, 4047, 4140 OR 8745 FED SPEC ALL MATERIAL RESPONSES |
| Weapon Size Designation | .30 CALIBER |
| Surface Treatment | PHOSPHATE |
| Material | STEEL COMP 4140 OR STEEL COMP 4047 OR STEEL COMP 8745 |
| Metallic Hardness Rating | 47.0 MINIMUM ROCKWELL C AND 52.0 MAXIMUM ROCKWELL C |
| 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 |
|---|---|
| 5564137 PRIMARY | Army, United States Department of the Dba Rock Island Arsenal Jmtc (USA) |
| Reference | Meaning |
|---|---|
| 1005005564137 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
| 1005-556-4137 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
NSN 1005-00-556-4137 is a Sear, manufactured by Army, United States Department of the Dba Rock Island Arsenal Jmtc, classified under FSC 1005, Guns, Through 30mm. Status: active.
NSN 1005-00-556-4137 has 1 manufacturer part number on file: 5564137 (Army, United States Department of the Dba Rock Island Arsenal Jmtc).
Key specifications for 5564137: FSC Application Data: MACHINE GUN,CAL .30; Mechanism Held: FIRING PIN; Weapon Model Number: M1919A6; Material Document and Classification: QQ-S-624, COMPOSITION 4042, 4047, 4140 OR 8745 FED SPEC ALL MATERIAL RESPONSES. 8 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.
NSN 1005-00-556-4137 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.