The Strap,retaining, cataloged under National Stock Number 5340-00-828-2018, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Parker-Hannifin Corporation Dba Pneutronics Div Corporate Headquarters. Government technical data includes 9 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-00-828-2018 |
| Primary Part Number | 3121-4-4 |
| Item Name | Strap,retaining |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Parker-Hannifin Corporation Dba Pneutronics Div Corporate Headquarters |
| Status | ACTIVE |
| Mounting Hole Size | 0.187 INCHES NOMINAL IN |
| Mounting Pad | NOT INCLUDED |
| Style Designator | DOUBLE ARCH |
| Material Thickness | 0.030 INCHES NOMINAL IN |
| Cushion | NOT INCLUDED |
| Distance Between Base and Inside of Arch | 0.300 INCHES NOMINAL IN |
| Material | COPPER ALLOY LOCATION NOT OTHERWISE SPECIFIED |
| Center to Center Distance Between Arch and Mounting Hole | 0.340 INCHES NOMINAL IN |
| Inside Diameter/arch Length | 0.250 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 |
|---|---|
| 3121-4-4 PRIMARY | Parker-Hannifin Corporation Dba Pneutronics Div Corporate Headquarters (USA) |
| Reference | Meaning |
|---|---|
| 10365328 | 5/9 Secondary reference Us Army Aviation and Missile Command |
| 3121-4-4 | 5/9 Secondary reference Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division |
| 3121-4-4 | 5/9 Secondary reference U.S. Government activity |
NSN 5340-00-828-2018 is a Strap,retaining, manufactured by Parker-Hannifin Corporation Dba Pneutronics Div Corporate Headquarters, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-00-828-2018 has 1 manufacturer part number on file: 3121-4-4 (Parker-Hannifin Corporation Dba Pneutronics Div Corporate Headquarters).
1 possible match (shared part number, not a government interchangeability claim): 5950-01-083-4850. Verify interchangeability with system specifications before substitution.
Key specifications for 3121-4-4: Mounting Hole Size: 0.187 INCHES NOMINAL IN; Mounting Pad: NOT INCLUDED; Style Designator: DOUBLE ARCH; Overall Length: 1.000 INCHES NOMINAL IN. 9 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.