The Level Sight Guide, cataloged under National Stock Number 2540-01-507-2355, is classified within Federal Supply Class 2540 (Vehicular Furniture and Accessories) of the Vehicular Equipment Components group. The manufacturer of record is Caterpillar Inc Div Caterpillar Defense. Government technical data includes 2 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. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 2540-01-507-2355 |
| Primary Part Number | 4R9531 |
| Item Name | Level Sight Guide |
| FSC / FSG | 2540 / 25 — Vehicular Furniture and Accessories |
| Manufacturer | Caterpillar Inc Div Caterpillar Defense |
| Status | ACTIVE |
| General Characteristics Item Description | FRONT GUIDE |
| Functional Description | FRONT NOSE GUIDE ON MINE RAKE |
| 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 |
|---|---|
| 4R9531 PRIMARY | Caterpillar Inc Div Caterpillar Defense (USA) |
NSN 2540-01-507-2355 is a Level Sight Guide, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 2540, Vehicular Furniture and Accessories. Status: active.
NSN 2540-01-507-2355 has 1 manufacturer part number on file: 4R9531 (Caterpillar Inc Div Caterpillar Defense).
Key specifications for 4R9531: General Characteristics Item Description: FRONT GUIDE; Special Features: NHA MINE RAKE; Functional Description: FRONT NOSE GUIDE ON MINE RAKE; Part Name Assigned by Controlling Agency: SIGHT ASSEMBLY. 2 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.