The Standoff,threaded,spacing, cataloged under National Stock Number 5340-00-074-0668, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Astronautics Corporation of America. 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. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-00-074-0668 |
| Primary Part Number | 100857 |
| Item Name | Standoff,threaded,spacing |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Astronautics Corporation of America |
| Status | ACTIVE |
| Width Across Flats | 0.250 INCHES NOMINAL IN |
| Length | 0.489 INCHES MINIMUM AND 0.491 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.260 INCHES NOMINAL LEFT INTERNAL (INCLUDES THRU THREAD) IN |
| Style Designator | LEFT INTERNAL THREAD |
| Material Document and Classification | QQ-S-764, COMP 303, COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape | HEXAGON |
| Surface Treatment | PASSIVATE OVERALL |
| Material | STEEL OVERALL |
| 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 |
|---|---|
| 100857 PRIMARY | Astronautics Corporation of America (USA) |
NSN 5340-00-074-0668 is a Standoff,threaded,spacing, manufactured by Astronautics Corporation of America, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-00-074-0668 has 1 manufacturer part number on file: 100857 (Astronautics Corporation of America).
3 possible matches (shared part number, not a government interchangeability claim): 1650-00-792-1040, 1005-00-934-2374, 5310-01-280-6751. Verify interchangeability with system specifications before substitution.
Key specifications for 100857: Width Across Flats: 0.250 INCHES NOMINAL IN; Length: 0.489 INCHES MINIMUM AND 0.491 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.260 INCHES NOMINAL LEFT INTERNAL (INCLUDES THRU THREAD) 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.