The Disk,solid,plain, cataloged under National Stock Number 5340-01-302-9542, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is C. Crouthamel & Co., 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-302-9542 |
| Primary Part Number | 051B-4001 |
| Item Name | Disk,solid,plain |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | C. Crouthamel & Co., 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 |
| Unit of Issue | EA |
| Part Number | Manufacturer |
|---|---|
| 051B-4001 PRIMARY | C. Crouthamel & Co., Inc. (USA) |
| Reference | Meaning |
|---|---|
| 051B-4001 | 5/9 Secondary reference U.S. Government activity |
| 02615 | 5/9 Secondary reference Defense Logistics Agency Dba Defense Supply Center Philadelphia |
NSN 5340-01-302-9542 is a Disk,solid,plain, manufactured by C. Crouthamel & Co., Inc., classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-302-9542 has 1 manufacturer part number on file: 051B-4001 (C. Crouthamel & Co., Inc.).
1 possible match (shared part number, not a government interchangeability claim): 6640-01-467-3627. Verify interchangeability with system specifications before substitution.
Key specifications for 051B-4001: Special Features: STEE,CORROSION RESISTING.AISI COMP 431 OR AISI COMP 630,MAGNETIC; ANNEALED; PASSIVATED; 0.985 IN. MIN 1.015 IN. MAX DIA; 0.438 IN. MAX H;BLIND THREADED MTG HOLE 0.190-32UNF-2B BY 0.250 IN. MIN DP W/COUNTERSINK 45.0 DEG BY 0.250 IN. DIA;BOTH FACES PARALLEL WITHIN 2.0 DEG ACROSS DIAMETER; ONE FACE HAS FOUR TO SIX CONCENTRIC ANNULAR VEE SHAPED GROOVES 0.031 IN. W BY 0.031 IN. DP; GROOVE SHAPE NOT CRITICAL; USED TO TRANSMIT VIBRATIONS BETWEEN TEST EQUIPMENT AND ITEMS BEING TESTED IN. 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.