The Retainer,optical Element, cataloged under National Stock Number 1240-01-342-8454, is classified within Federal Supply Class 1240 (Optical Sighting and Ranging Equipment) of the Fire Control Equipment group. The manufacturer of record is Lockheed Martin Corporation. Government technical data includes 12 specifications, cited from the U.S. Government catalog. The record lists 5 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1240-01-342-8454 |
| Primary Part Number | 717512394-002 |
| Item Name | Retainer,optical Element |
| FSC / FSG | 1240 / 12 — Optical Sighting and Ranging Equipment |
| Manufacturer | Lockheed Martin Corporation |
| Status | ACTIVE |
| Hole or Slot Quantity | 4 |
| Drive Type | SLOTTED |
| Drive Facility Angular Spacing in Deg | 90.0 |
| Setscrew Notch | NOT PROVIDED |
| Material Document and Classification | QQ-A-225/8, T651 FED SPEC SINGLE MATERIAL RESPONSE |
| Guide Location | BOTH EDGES |
| Thread Size | 1 19/64-18 |
| Guide Design | THREAD CHAMFER |
| Depth | 0.060 INCHES NOMINAL IN |
| Width | 0.080 INCHES NOMINAL IN |
| Internal Annular Serration | NOT PROVIDED |
| Material | ALUMINUM ALLOY 6061 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 717512394-002 | Paragon Machine Inc. (USA) |
| 717512394-002 PRIMARY | Lockheed Martin Corporation (USA) |
| 717512394-002 | Seiler Instrument and Manufacturing Company, Incorporated (USA) |
| 717512394-002 | Freehold Manufacturing Assembly Company, Inc. Dba Freehold Manufacturing Assembly Co Inc (USA) |
| 717512394-002 | Starwin Industries, Llc (USA) |
NSN 1240-01-342-8454 is a Retainer,optical Element, manufactured by Lockheed Martin Corporation, classified under FSC 1240, Optical Sighting and Ranging Equipment. Status: active.
NSN 1240-01-342-8454 has 5 manufacturer part numbers on file: 717512394-002 (Paragon Machine Inc.), 717512394-002 (Lockheed Martin Corporation), 717512394-002 (Seiler Instrument and Manufacturing Company, Incorporated), 717512394-002 (Freehold Manufacturing Assembly Company, Inc. Dba Freehold Manufacturing Assembly Co Inc), 717512394-002 (Starwin Industries, Llc).
Key specifications for 717512394-002: Hole or Slot Quantity: 4; Drive Type: SLOTTED; Drive Facility Angular Spacing in Deg: 90.0; Setscrew Notch: NOT PROVIDED. 12 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 1240-01-342-8454 has DEMIL Code Q. 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.