The Clamp,loop, cataloged under National Stock Number 5340-00-256-7370, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. Government technical data includes 10 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-00-256-7370 |
| Primary Part Number | 669611 |
| Item Name | Clamp,loop |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| Loop Width | 0.750 INCHES NOMINAL IN |
| Style Designator | MULTIPLE LOOP |
| Material Document and Classification | AMS 5510 ASSN STD SINGLE MATERIAL RESPONSE BAND |
| Diameter | 0.216 INCHES MINIMUM AND 0.226 INCHES MAXIMUM IN |
| Material Thickness | 0.027 INCHES MINIMUM AND 0.030 INCHES MAXIMUM IN |
| Distance From Loop Center to Tongue End | 1.612 INCHES MINIMUM AND 1.648 INCHES MAXIMUM IN |
| Tongue Hole Type | ROUND, UNTHREADED |
| Center to Center Distance Between Loop and Mounting Hole | 1.372 INCHES MINIMUM AND 1.388 INCHES MAXIMUM IN |
| Material | STEEL COMP 321 BAND |
| Loop Length | 1.995 INCHES MINIMUM AND 2.005 INCHES MAXIMUM 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 |
|---|---|
| 669611 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| Reference | Meaning |
|---|---|
| 669611 | 5/2 Secondary reference U.S. Government activity |
| 669611 | 5/9 Secondary reference Turbo Power & Marine System Inc Sub of United Technologies Corp |
| 669611 | 5/2 Secondary reference U.S. Government activity |
| 669611 | 5/9 Secondary reference Hoffmann-Werke |
NSN 5340-00-256-7370 is a Clamp,loop, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-00-256-7370 has 1 manufacturer part number on file: 669611 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).
Key specifications for 669611: Loop Width: 0.750 INCHES NOMINAL IN; Style Designator: MULTIPLE LOOP; Material Document and Classification: AMS 5510 ASSN STD SINGLE MATERIAL RESPONSE BAND; Diameter: 0.216 INCHES MINIMUM AND 0.226 INCHES MAXIMUM IN. 10 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.