The Standoff,threaded,spacing, cataloged under National Stock Number 5340-01-176-2553, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Lockheed Martin Corporation Div Rotary and Mission Systems. Government technical data includes 9 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 | 5340-01-176-2553 |
| Primary Part Number | 6186140-1 |
| Item Name | Standoff,threaded,spacing |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Lockheed Martin Corporation Div Rotary and Mission Systems |
| Status | ACTIVE |
| Left Counterbore Depth | 0.110 INCHES NOMINAL IN |
| Width Across Flats | 0.880 INCHES NOMINAL IN |
| Length | 1.000 INCHES NOMINAL IN |
| Distance Between Hole Centers | 0.500 INCHES NOMINAL IN |
| Style Designator | INTERNALLY THREADED FULL LENGTH |
| Left Counterbore Diameter | 0.552 INCHES MINIMUM AND 0.572 INCHES MAXIMUM IN |
| Cross-Sectional Shape | RECTANGULAR |
| Distance From End to Hole Center | 0.220 INCHES NOMINAL IN |
| Hole Quantity Perpendicular to Axis | 4 |
| 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 |
|---|---|
| 6186140-1 PRIMARY | Lockheed Martin Corporation Div Rotary and Mission Systems (USA) |
NSN 5340-01-176-2553 is a Standoff,threaded,spacing, manufactured by Lockheed Martin Corporation Div Rotary and Mission Systems, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-176-2553 has 1 manufacturer part number on file: 6186140-1 (Lockheed Martin Corporation Div Rotary and Mission Systems).
Key specifications for 6186140-1: Left Counterbore Depth: 0.110 INCHES NOMINAL IN; Width Across Flats: 0.880 INCHES NOMINAL IN; Length: 1.000 INCHES NOMINAL IN; Distance Between Hole Centers: 0.500 INCHES NOMINAL IN. 9 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.