The Standoff,threaded,spacing, cataloged under National Stock Number 5340-01-187-4377, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Cm Manufacturing Inc Dba Cm Manufacturing Inc. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5340-01-187-4377 |
| Primary Part Number | 1881-325 |
| Item Name | Standoff,threaded,spacing |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Cm Manufacturing Inc Dba Cm Manufacturing Inc |
| Status | ACTIVE |
| Length | 0.915 INCHES MINIMUM AND 0.920 INCHES MAXIMUM IN |
| Style Designator | INTERNALLY THREADED FULL LENGTH |
| Material Document and Classification | QQ-S-763, CLASS 302 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Diameter | 0.373 INCHES MINIMUM AND 0.374 INCHES MAXIMUM IN |
| Cross-Sectional Shape | ROUND |
| Surface Treatment | PASSIVATE OVERALL |
| Material | STEEL COMP 302 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 |
NSN 5340-01-187-4377 is a Standoff,threaded,spacing, manufactured by Cm Manufacturing Inc Dba Cm Manufacturing Inc, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-187-4377 has 2 manufacturer part numbers on file: 1881-325 (Cm Manufacturing Inc Dba Cm Manufacturing Inc), 1881-325 (Goodrich Corporation).
1 possible match (shared part number, not a government interchangeability claim): 5935-01-534-4399. Verify interchangeability with system specifications before substitution.
Key specifications for 1881-325: Length: 0.915 INCHES MINIMUM AND 0.920 INCHES MAXIMUM IN; Style Designator: INTERNALLY THREADED FULL LENGTH; Material Document and Classification: QQ-S-763, CLASS 302 FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Diameter: 0.373 INCHES MINIMUM AND 0.374 INCHES MAXIMUM IN. 7 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.