The Standoff,threaded,spacing, cataloged under National Stock Number 5340-00-343-4263, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Grimes Aerospace Company. Government technical data includes 10 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 | 5340-00-343-4263 |
| Primary Part Number | 60-2181-1 |
| Item Name | Standoff,threaded,spacing |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Grimes Aerospace Company |
| Status | ACTIVE |
| Flange Width Across Flats | 0.312 INCHES NOMINAL IN |
| Length | 0.312 INCHES NOMINAL IN |
| Flange Thickness | 0.125 INCHES NOMINAL IN |
| Groove Diameter | 0.131 INCHES MINIMUM AND 0.141 INCHES MAXIMUM IN |
| Groove Radius | 0.015 INCHES NOMINAL IN |
| Style Designator | PROJECTION AND FLANGE LEFT INTERNAL AND RIGHT EXTERNAL THREAD |
| Diameter | 0.300 INCHES NOMINAL IN |
| Cross-Sectional Shape | HEXAGON |
| Shoulder Diameter | 0.170 INCHES MINIMUM AND 0.175 INCHES MAXIMUM IN |
| Shoulder Length | 0.300 INCHES NOMINAL 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 |
|---|---|
| 60-2181-1 PRIMARY | Grimes Aerospace Company (USA) |
NSN 5340-00-343-4263 is a Standoff,threaded,spacing, manufactured by Grimes Aerospace Company, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-00-343-4263 has 1 manufacturer part number on file: 60-2181-1 (Grimes Aerospace Company).
Key specifications for 60-2181-1: Flange Width Across Flats: 0.312 INCHES NOMINAL IN; Length: 0.312 INCHES NOMINAL IN; Flange Thickness: 0.125 INCHES NOMINAL IN; Groove Diameter: 0.131 INCHES MINIMUM AND 0.141 INCHES MAXIMUM IN. 10 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.