The Standoff,threaded,spacing, cataloged under National Stock Number 5340-00-435-6644, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Lockheed Martin Corp Electronics and Missiles Div. Government technical data includes 6 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. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-00-435-6644 |
| Primary Part Number | 132651-1 |
| Item Name | Standoff,threaded,spacing |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Lockheed Martin Corp Electronics and Missiles Div |
| Status | ACTIVE |
| Width Across Flats | 0.375 INCHES NOMINAL IN |
| Length | 4.624 INCHES NOMINAL IN |
| Groove Diameter | 0.195 INCHES MINIMUM AND 0.205 INCHES MAXIMUM IN |
| Style Designator | LEFT INTERNAL AND RIGHT EXTERNAL THREAD |
| Cross-Sectional Shape | HEXAGON |
| Groove Width | 0.050 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Unit of Issue | EA |
| Part Number | Manufacturer |
|---|---|
| 132651-1 PRIMARY | Lockheed Martin Corp Electronics and Missiles Div (USA) |
NSN 5340-00-435-6644 is a Standoff,threaded,spacing, manufactured by Lockheed Martin Corp Electronics and Missiles Div, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-00-435-6644 has 1 manufacturer part number on file: 132651-1 (Lockheed Martin Corp Electronics and Missiles Div).
Key specifications for 132651-1: Width Across Flats: 0.375 INCHES NOMINAL IN; Length: 4.624 INCHES NOMINAL IN; Groove Diameter: 0.195 INCHES MINIMUM AND 0.205 INCHES MAXIMUM IN; Style Designator: LEFT INTERNAL AND RIGHT EXTERNAL THREAD. 6 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
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.