The Fastener,positive Lock, cataloged under National Stock Number 5325-01-438-1900, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Caterpillar Inc Div Caterpillar Defense. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-01-438-1900 |
| Primary Part Number | 4D7735 |
| Item Name | Fastener,positive Lock |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Caterpillar Inc Div Caterpillar Defense |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 17KP446 | Oshkosh Defense Llc (USA) |
| 4D-7735 | Pon Equipment B.v. (NLD) |
| 4D7735 PRIMARY | Caterpillar Inc Div Caterpillar Defense (USA) |
| Reference | Meaning |
|---|---|
| 10341101 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 17KP446 | 5/9 Secondary reference Oshkosh Corp |
NSN 5325-01-438-1900 is a Fastener,positive Lock, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-438-1900 has 3 manufacturer part numbers on file: 17KP446 (Oshkosh Defense Llc), 4D-7735 (Pon Equipment B.v.), 4D7735 (Caterpillar Inc Div Caterpillar Defense).
Key specifications for 4D7735: End Item Identification: CATERPILLAR TRACTOR 950 F LOADER. 0 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). 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.