The Clamp,loop, cataloged under National Stock Number 5340-01-073-2799, 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 13 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5340-01-073-2799 |
| Primary Part Number | S500-21 |
| Item Name | Clamp,loop |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Umpco, Inc. Dba Umpco Inc |
| Status | ACTIVE |
| Cushioning Environmental Protection | HEAT AND WEATHER RESISTANT |
| Style Designator | OFFSET MOUNT |
| Material Document and Classification | AMS 5510 ASSN STD 1ST MATERIAL RESPONSE OR AMS 5512 ASSN STD 2ND MATERIAL RESPONSE BAND |
| Material Document and Classification | AMS 3840 ASSN STD SINGLE MATERIAL RESPONSE CUSHION |
| Diameter | 0.199 INCHES MINIMUM AND 0.209 INCHES MAXIMUM IN |
| Material Thickness | 0.059 INCHES MINIMUM AND 0.069 INCHES MAXIMUM IN |
| Distance From Loop Center to Tongue End | 1.374 INCHES NOMINAL IN |
| Specification/standard Data | 81205-BACC10EP MANUFACTURERS SPECIFICATION |
| Tongue Hole Type | ROUND, UNTHREADED |
| Center to Center Distance Between Loop and Mounting Hole | 1.126 INCHES MINIMUM AND 1.186 INCHES MAXIMUM IN |
| Material | ASBESTOS CUSHION |
| Material | STEEL COMP 321 OR STEEL COMP 347 BAND |
| Loop Inside Diameter | 1.312 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 |
| Part Number | Manufacturer |
|---|---|
| S500-21 PRIMARY | Umpco, Inc. Dba Umpco Inc (USA) |
| Reference | Meaning |
|---|---|
| BACC10EP21 | 3/2 Design control — primary reference U.S. Government activity |
| TA09C18H21AC | 5/2 Secondary reference U.S. Government activity |
| 490-21R | 3/2 Design control — primary reference U.S. Government activity |
| JP-0030-21 | 5/9 Secondary reference Chromalloy Gas Turbine Llc Div Chromalloy Connecticut |
| S300-21 | 5/9 Secondary reference Umpco, Inc. Dba Umpco Inc |
| TA9C18H21AC | 3/2 Design control — primary reference U.S. Government activity |
NSN 5340-01-073-2799 is a Clamp,loop, manufactured by Umpco, Inc. Dba Umpco Inc, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-073-2799 has 1 manufacturer part number on file: S500-21 (Umpco, Inc. Dba Umpco Inc).
Key specifications for S500-21: Cushioning Environmental Protection: HEAT AND WEATHER RESISTANT; Style Designator: OFFSET MOUNT; Material Document and Classification: AMS 5510 ASSN STD 1ST MATERIAL RESPONSE OR AMS 5512 ASSN STD 2ND MATERIAL RESPONSE BAND; Material Document and Classification: AMS 3840 ASSN STD SINGLE MATERIAL RESPONSE CUSHION. 13 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.