The Leadscrew Assembly, cataloged under National Stock Number 1270-01-078-5261, is classified within Federal Supply Class 1270 (Aircraft Gunnery Fire Control Components) of the Fire Control Equipment group. The manufacturer of record is Qioptiq Ltd. Government technical data includes 2 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. 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 | 1270-01-078-5261 |
| Primary Part Number | 017647 |
| Item Name | Leadscrew Assembly |
| FSC / FSG | 1270 / 12 — Aircraft Gunnery Fire Control Components |
| Manufacturer | Qioptiq Ltd |
| Status | ACTIVE |
| FSC Application Data | OPTICAL MECHANISM,019708,1270-01-080-0263 |
| General Characteristics Item Description | W-NUT,SHAFT,BUSH; ASSEMBLED MAX RADIAL MOVEMENT 0.0005 TIR; RIGHT HAND RETICLE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 017647 PRIMARY | Qioptiq Ltd (GBR) |
NSN 1270-01-078-5261 is a Leadscrew Assembly, manufactured by Qioptiq Ltd, classified under FSC 1270, Aircraft Gunnery Fire Control Components. Status: active.
NSN 1270-01-078-5261 has 1 manufacturer part number on file: 017647 (Qioptiq Ltd).
1 possible match (shared part number, not a government interchangeability claim): 2915-01-565-1464. Verify interchangeability with system specifications before substitution.
Key specifications for 017647: FSC Application Data: OPTICAL MECHANISM,019708,1270-01-080-0263; General Characteristics Item Description: W-NUT,SHAFT,BUSH; ASSEMBLED MAX RADIAL MOVEMENT 0.0005 TIR; RIGHT HAND RETICLE; End Item Identification: SHUD,79-049-12,1270-01-094-8505. 2 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 1270-01-078-5261 has DEMIL Code B. 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.