The Strap,retaining, cataloged under National Stock Number 5340-01-191-7776, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5340-01-191-7776 |
| Primary Part Number | S346SSH28 |
| Item Name | Strap,retaining |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Umpco, Inc. Dba Umpco Inc |
| Status | ACTIVE |
| Mounting Hole Size | 0.204 INCHES NOMINAL IN |
| Distance Between Mounting Hole Centers | 2.562 INCHES NOMINAL IN |
| Mounting Pad | NOT INCLUDED |
| Style Designator | CURVED ARCH |
| Material Document and Classification | AMS 3303 ASSN STD SINGLE MATERIAL RESPONSE CUSHIONING |
| Material Document and Classification | AISI 302 FED STD 66 ASSN STD 1ST MATERIAL RESPONSE OR AISI 321 FED STD 66 ASSN STD 2ND MATERIAL RESPONSE LOCATION NOT OTHERWISE SPECIFIED |
| Material Thickness | 0.031 INCHES NOMINAL IN |
| Cushion | INCLUDED |
| Distance Between Base and Inside of Arch | 1.781 INCHES NOMINAL IN |
| Surface Treatment | PASSIVATE |
| Material | RUBBER SILICONE CLASS Q CUSHIONING |
| Material | STEEL COMP 302 OR STEEL COMP 321 LOCATION NOT OTHERWISE SPECIFIED |
| Inside Diameter/arch Length | 1.750 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 |
|---|---|
| S346SSH28 PRIMARY | Umpco, Inc. Dba Umpco Inc (USA) |
| Reference | Meaning |
|---|---|
| 5262596 | 7/2 Vendor item drawing reference Naval Sea Systems Command |
NSN 5340-01-191-7776 is a Strap,retaining, manufactured by Umpco, Inc. Dba Umpco Inc, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-191-7776 has 1 manufacturer part number on file: S346SSH28 (Umpco, Inc. Dba Umpco Inc).
Key specifications for S346SSH28: Mounting Hole Size: 0.204 INCHES NOMINAL IN; Distance Between Mounting Hole Centers: 2.562 INCHES NOMINAL IN; Mounting Pad: NOT INCLUDED; Style Designator: CURVED ARCH. 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.