The Mounting Plate,lens, cataloged under National Stock Number 1270-01-195-4017, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1270-01-195-4017 |
| Primary Part Number | 031526 |
| Item Name | Mounting Plate,lens |
| FSC / FSG | 1270 / 12 — Aircraft Gunnery Fire Control Components |
| Manufacturer | Qioptiq Ltd |
| Status | ACTIVE |
| FSC Application Data | ACFT GUNNERY FIRE CONTROL COMPONENT |
| General Characteristics Item Description | MATERIAL OPTICAL GLASS CLASS 1 GRADE B PER MIL-G-174A; FINISH SURFACES MARKED "P" POLISHED,ALL OTHERS GROUND; ANTI-REFLECTION COATING MULTI-LAYER TO MIL-C-675 PPE SPEC CS8; PAINT ALL GROUND SURFACES TO PPE SS2; O/A DIM. INSIDE DIA. 141.0 METRIC MINIMUM,141.5 METRIC MAXIMUM,OUTSIDE DIA. 144.5 METRIC MINIMUM,145.0 METRIC MAXIMUM A |
| 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 |
|---|---|
| 031526 | Qioptiq Ltd (GBR) |
| Reference | Meaning |
|---|---|
| 031526 | 3/2 Design control — primary reference U.S. Government activity |
NSN 1270-01-195-4017 is a Mounting Plate,lens, manufactured by Qioptiq Ltd, classified under FSC 1270, Aircraft Gunnery Fire Control Components. Status: active.
NSN 1270-01-195-4017 has 1 manufacturer part number on file: 031526 (Qioptiq Ltd).
2 possible matches (shared part number, not a government interchangeability claim): 6515-01-426-1820, 4820-01-718-6047. Verify interchangeability with system specifications before substitution.
Key specifications for 031526: FSC Application Data: ACFT GUNNERY FIRE CONTROL COMPONENT; General Characteristics Item Description: MATERIAL OPTICAL GLASS CLASS 1 GRADE B PER MIL-G-174A; FINISH SURFACES MARKED "P" POLISHED,ALL OTHERS GROUND; ANTI-REFLECTION COATING MULTI-LAYER TO MIL-C-675 PPE SPEC CS8; PAINT ALL GROUND SURFACES TO PPE SS2; O/A DIM. INSIDE DIA. 141.0 METRIC MINIMUM,141.5 METRIC MAXIMUM,OUTSIDE DIA. 144.5 METRIC MINIMUM,145.0 METRIC MAXIMUM A; End Item Identification: F-16C/D ACFT. 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 1270-01-195-4017 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.