The Pin Set,attachment, cataloged under National Stock Number 4240-01-481-5531, is classified within Federal Supply Class 4240 (Safety and Rescue Equipment) of the Fire Fighting, Rescue, and Safety Equipment group. The manufacturer of record is Power Hawk Technologies, Inc.. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4240-01-481-5531 |
| Primary Part Number | AP-1600 |
| Item Name | Pin Set,attachment |
| FSC / FSG | 4240 / 42 — Safety and Rescue Equipment |
| Manufacturer | Power Hawk Technologies, Inc. |
| Status | ACTIVE |
| 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 |
|---|---|
| AP-1600 PRIMARY | Power Hawk Technologies, Inc. (USA) |
| Reference | Meaning |
|---|---|
| AP-1600 | 5/9 Secondary reference Curtiss-Wright Controls, Inc. Dba Curtiss Wright Div Actuation Division |
| 94609 | 5/9 Secondary reference Curtiss-Wright Controls, Inc. Dba Curtiss Wright Div Actuation Division |
NSN 4240-01-481-5531 is a Pin Set,attachment, manufactured by Power Hawk Technologies, Inc., classified under FSC 4240, Safety and Rescue Equipment. Status: active.
NSN 4240-01-481-5531 has 1 manufacturer part number on file: AP-1600 (Power Hawk Technologies, Inc.).
1 possible match (shared part number, not a government interchangeability claim): 5935-01-527-0494. Verify interchangeability with system specifications before substitution.
Key specifications for AP-1600: Special Features: HIGH-STRENGTH STEEL, BALL DETENT; ATTACHMENT PIN SET FOR P-16 RESCUE TOOL; End Item Identification: POWER HAWK P-16. 0 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.