The Clamp,loop, cataloged under National Stock Number 5340-01-340-5201, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Umpco, Inc. Dba Umpco Inc. Government technical data includes 11 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5340-01-340-5201 |
| Primary Part Number | ST1540-12 |
| Item Name | Clamp,loop |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Umpco, Inc. Dba Umpco Inc |
| Status | ACTIVE |
| Style Designator | OFFSET MOUNT |
| Material Document and Classification | AMS5510 ASSN STD SINGLE MATERIAL RESPONSE BAND |
| Material Document and Classification | PWA36450 MFR REF SINGLE MATERIAL RESPONSE CUSHION |
| Diameter | 0.204 INCHES NOMINAL IN |
| Material Thickness | 0.051 INCHES NOMINAL IN |
| Distance From Loop Center to Tongue End | 1.028 INCHES MINIMUM AND 1.088 INCHES MAXIMUM IN |
| Tongue Hole Type | ROUND, UNTHREADED |
| Center to Center Distance Between Loop and Mounting Hole | 0.805 INCHES MINIMUM AND 0.865 INCHES MAXIMUM IN |
| Material | RUBBER SILICONE CLASS Q CUSHION |
| Material | STEEL COMP 321 BAND |
| Loop Inside Diameter | 0.750 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 |
|---|---|
| ST1540-12 | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| ST1540-12 PRIMARY | Umpco, Inc. Dba Umpco Inc (USA) |
| Reference | Meaning |
|---|---|
| 5340PL0805249 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
NSN 5340-01-340-5201 is a Clamp,loop, manufactured by Umpco, Inc. Dba Umpco Inc, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-340-5201 has 2 manufacturer part numbers on file: ST1540-12 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), ST1540-12 (Umpco, Inc. Dba Umpco Inc).
1 possible match (shared part number, not a government interchangeability claim): 5340-01-669-4829. Verify interchangeability with system specifications before substitution.
Key specifications for ST1540-12: Style Designator: OFFSET MOUNT; Material Document and Classification: AMS5510 ASSN STD SINGLE MATERIAL RESPONSE BAND; Material Document and Classification: PWA36450 MFR REF SINGLE MATERIAL RESPONSE CUSHION; Diameter: 0.204 INCHES NOMINAL IN. 11 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.