The Strap,retaining, cataloged under National Stock Number 5340-01-444-8385, 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 14 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5340-01-444-8385 |
| Primary Part Number | S278SSH26 |
| Item Name | Strap,retaining |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Umpco, Inc. Dba Umpco Inc |
| Status | ACTIVE |
| Mounting Hole Size | 0.197 INCHES NOMINAL IN |
| Distance Between Mounting Hole Centers | 2.690 INCHES NOMINAL IN |
| Mounting Pad | INCLUDED |
| Style Designator | SADDLE ARCH |
| Material Document and Classification | AMS 5513 ASSN STD SINGLE MATERIAL RESPONSE BONDING STRIP |
| Material Document and Classification | TA79, TA MFG CO MFR REF SINGLE MATERIAL RESPONSE CUSHIONING |
| Material Thickness | 0.050 INCHES NOMINAL IN |
| Cushion | INCLUDED |
| Distance Between Base and Inside of Arch | 1.841 INCHES NOMINAL IN |
| Surface Treatment | PASSIVATE |
| Material | STEEL COMP 304 LOCATION NOT OTHERWISE SPECIFIED |
| Material | RUBBER ETHYLENE-PROPYLENE CLASS EPM CUSHIONING |
| Material | STEEL COMP 304 BONDING STRIP |
| 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 |
|---|---|
| S278SSH26 PRIMARY | Umpco, Inc. Dba Umpco Inc (USA) |
| Reference | Meaning |
|---|---|
| 9D0018C026HR | 5/2 Secondary reference U.S. Government activity |
| TA09C89C026HR | 3/2 Design control — primary reference U.S. Government activity |
| 1399SS26HT | 3/2 Design control — primary reference U.S. Government activity |
NSN 5340-01-444-8385 is a Strap,retaining, manufactured by Umpco, Inc. Dba Umpco Inc, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-444-8385 has 1 manufacturer part number on file: S278SSH26 (Umpco, Inc. Dba Umpco Inc).
Key specifications for S278SSH26: Mounting Hole Size: 0.197 INCHES NOMINAL IN; Distance Between Mounting Hole Centers: 2.690 INCHES NOMINAL IN; Mounting Pad: INCLUDED; Style Designator: SADDLE ARCH. 14 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.