The Clamp,loop, cataloged under National Stock Number 5340-01-229-8312, 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 7 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5340-01-229-8312 |
| Primary Part Number | 166638 |
| Item Name | Clamp,loop |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Astronautics Corporation of America |
| Status | ACTIVE |
| Material Document and Classification | QQ-A-250/4,T351 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Diameter | 0.080 INCHES NOMINAL IN |
| Distance From Loop Center to Tongue End | 0.375 INCHES NOMINAL IN |
| Tongue Hole Type | ROUND, UNTHREADED |
| Center to Center Distance Between Loop and Mounting Hole | 0.300 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY 2024 OVERALL |
| Loop Inside Diameter | 0.375 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 |
|---|---|
| 166638 PRIMARY | Astronautics Corporation of America (USA) |
| Reference | Meaning |
|---|---|
| 128369 | 5/9 Secondary reference Astronautics Corporation of America |
NSN 5340-01-229-8312 is a Clamp,loop, manufactured by Astronautics Corporation of America, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-229-8312 has 1 manufacturer part number on file: 166638 (Astronautics Corporation of America).
1 possible match (shared part number, not a government interchangeability claim): 6150-01-549-5295. Verify interchangeability with system specifications before substitution.
Key specifications for 166638: Material Document and Classification: QQ-A-250/4,T351 FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Diameter: 0.080 INCHES NOMINAL IN; Overall Length: 0.750 INCHES NOMINAL IN; Overall Width: 0.310 INCHES NOMINAL 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.