The Locking Plate,nut and Bolt, cataloged under National Stock Number 5340-00-551-4258, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Carrier Corp. Government technical data includes 18 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5340-00-551-4258 |
| Primary Part Number | 9MW1-1672-1 |
| Item Name | Locking Plate,nut and Bolt |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Carrier Corp |
| Status | ACTIVE |
| Plate Thickness | 0.038 INCHES MINIMUM AND 0.042 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416, TYPE 1, CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE |
| Distance Between Mounting Hole Centers | 2.000 INCHES NOMINAL IN |
| Special Test Features | SPECIAL QUALITY CONTROLTESTING |
| Angle Between Ears in Deg | 36.0 |
| Body Width | 0.940 INCHES NOMINAL IN |
| Style Designator | SOCKET |
| Material Document and Classification | ASTM A240 TYPE 430 ASSN STD SINGLE MATERIAL RESPONSE |
| Mounting Hole Diameter | 0.660 INCHES NOMINAL IN |
| Angle From Horizontal Centerline to EAR in Deg | 90.0 |
| Cross-Sectional Shape Style | FLAT |
| Departure From Cited Document | AS MODIFIED BY MATERIAL AND LOCKING FEATURE (AS APPLICATE) |
| Surface Treatment | CADMIUM |
| Width | 1.560 INCHES NOMINAL IN |
| Prebent Locking Feature Location | ALL |
| Test Data Document | 81349-MIL-P-23199 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.). |
| Material | STEEL COMP 430 |
| EAR Width | 0.260 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 |
|---|---|
| 9MW1-1672-1 PRIMARY | Carrier Corp (USA) |
| Reference | Meaning |
|---|---|
| P00450NRP | 5/9 Secondary reference Defense Logistics Agency Dba Defense Supply Center Philadelphia |
| 9MW1-1352-1 | 5/9 Secondary reference Carrier Corp |
| LO1266 | 5/9 Secondary reference Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings) |
| PO5340005514258 | 5/9 Secondary reference Defense Logistics Agency Dba Defense Supply Center Philadelphia |
NSN 5340-00-551-4258 is a Locking Plate,nut and Bolt, manufactured by Carrier Corp, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-00-551-4258 has 1 manufacturer part number on file: 9MW1-1672-1 (Carrier Corp).
1 possible match (shared part number, not a government interchangeability claim): 5340-01-682-1350. Verify interchangeability with system specifications before substitution.
Key specifications for 9MW1-1672-1: Plate Thickness: 0.038 INCHES MINIMUM AND 0.042 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-416, TYPE 1, CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE; Distance Between Mounting Hole Centers: 2.000 INCHES NOMINAL IN; Special Test Features: SPECIAL QUALITY CONTROLTESTING. 18 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.