The Clamp,loop, cataloged under National Stock Number 5340-00-438-7777, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Textron Aviation Inc. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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.
| Parameter | Value |
|---|---|
| NSN | 5340-00-438-7777 |
| Primary Part Number | S1891-10 |
| Item Name | Clamp,loop |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Textron Aviation Inc |
| Status | ACTIVE |
| 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 |
| Part Number | Manufacturer |
|---|---|
| S1891-10 PRIMARY | Textron Aviation Inc (USA) |
| QS100M10S | Textron Aviation Inc (USA) |
| Reference | Meaning |
|---|---|
| S1891-10 | 3/9 Design control — primary reference Cessna Aircraft Company Dba Textron Aviation |
| QS100M10S | 5/9 Secondary reference Cessna Aircraft Company Dba Textron Aviation |
NSN 5340-00-438-7777 is a Clamp,loop, manufactured by Textron Aviation Inc, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-00-438-7777 has 2 manufacturer part numbers on file: S1891-10 (Textron Aviation Inc), QS100M10S (Textron Aviation Inc).
1 possible match (shared part number, not a government interchangeability claim): 4730-00-877-6298. Verify interchangeability with system specifications before substitution.
Key specifications for S1891-10: Material: STEEL OVERALL. 1 specification is 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.