The Clamp,loop, cataloged under National Stock Number 5340-00-618-2021, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Nmc Group, Inc.. Government technical data includes 8 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-00-618-2021 |
| Primary Part Number | ST9M529-4 |
| Item Name | Clamp,loop |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Nmc Group, Inc. |
| Status | ACTIVE |
| Style Designator | SINGLE LOOP |
| Diameter | 0.198 INCHES MINIMUM AND 0.208 INCHES MAXIMUM IN |
| Material Thickness | 0.090 INCHES NOMINAL IN |
| Distance From Loop Center to Tongue End | 0.760 INCHES NOMINAL IN |
| Tongue Hole Type | ROUND, UNTHREADED |
| Center to Center Distance Between Loop and Mounting Hole | 0.495 INCHES MINIMUM AND 0.525 INCHES MAXIMUM IN |
| Material | PLASTIC PHENOLIC BAND |
| Loop Inside Diameter | 0.240 INCHES MINIMUM AND 0.255 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 |
|---|---|
| ST9M529-4 PRIMARY | Nmc Group, Inc. (USA) |
| Reference | Meaning |
|---|---|
| ST9M529-4 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
NSN 5340-00-618-2021 is a Clamp,loop, manufactured by Nmc Group, Inc., classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-00-618-2021 has 1 manufacturer part number on file: ST9M529-4 (Nmc Group, Inc.).
Key specifications for ST9M529-4: Style Designator: SINGLE LOOP; Diameter: 0.198 INCHES MINIMUM AND 0.208 INCHES MAXIMUM IN; Overall Width: 0.500 INCHES NOMINAL IN; Material Thickness: 0.090 INCHES NOMINAL IN. 8 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.