The Collimator Set,alignment, cataloged under National Stock Number 4931-01-445-0164, is classified within Federal Supply Class 4931 (Fire Control Maintenance and Repair Shop Specialized Equipment) of the Maintenance and Repair Shop Equipment group. The manufacturer of record is Spectron Instrument Corp. 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 | 4931-01-445-0164 |
| Primary Part Number | 1500-OMS-HDS-01 |
| Item Name | Collimator Set,alignment |
| FSC / FSG | 4931 / 49 — Fire Control Maintenance and Repair Shop Specialized Equipment |
| Manufacturer | Spectron Instrument Corp |
| Status | ACTIVE |
| Reference Data and Literature | SERD NO:0000000006 |
| Functional Description | USED TO VERIFY BORE SIGHT AXIS AND ROLL REFERENCE FOR HUD TESTING. THE COLLIMATOR WILL BE STABLE TO +/- 0.10 MILLIRADIAN IN NORMAL USE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL C — Remove/Demil Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 1500-OMS-HDS-01 PRIMARY | Spectron Instrument Corp (USA) |
NSN 4931-01-445-0164 is a Collimator Set,alignment, manufactured by Spectron Instrument Corp, classified under FSC 4931, Fire Control Maintenance and Repair Shop Specialized Equipment. Status: active.
NSN 4931-01-445-0164 has 1 manufacturer part number on file: 1500-OMS-HDS-01 (Spectron Instrument Corp).
1 possible match (shared part number, not a government interchangeability claim): 4920-01-631-2369. Verify interchangeability with system specifications before substitution.
Key specifications for 1500-OMS-HDS-01: Reference Data and Literature: SERD NO:0000000006; Special Features: REQUESTED NAME;HUD SIMULATOR, AN/GSM-397 INTERMEDIATE LEVEL; Functional Description: USED TO VERIFY BORE SIGHT AXIS AND ROLL REFERENCE FOR HUD TESTING. THE COLLIMATOR WILL BE STABLE TO +/- 0.10 MILLIRADIAN IN NORMAL USE; End Item Identification: F-15 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 4931-01-445-0164 has DEMIL Code C. 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.