The Insert,screw Thread, cataloged under National Stock Number 5325-01-359-6759, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Defense Logistics Agency Dba Defense Supply Center Philadelphia. Government technical data includes 15 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-01-359-6759 |
| Primary Part Number | MS51831-107 |
| Item Name | Insert,screw Thread |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Defense Logistics Agency Dba Defense Supply Center Philadelphia |
| Status | ACTIVE |
| Length | 0.797 INCHES MINIMUM AND 0.827 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.712 INCHES NOMINAL IN |
| Insert Size | 0.8125-16 UN-2A A |
| Style Designator | KEYLOCK |
| Material Document and Classification | AMS 5640 COMP 303 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5640 COMP 303E ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A582 COMP 303 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A582 COMP 303E ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5738 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Internal Thread Relief Depth | 0.090 INCHES MINIMUM AND 0.110 INCHES MAXIMUM IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.5625 INCHES IN |
| Full Internal Thread Length | 0.687 INCHES MINIMUM AND 0.737 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Thread Class | 3B |
| Thread Quantity Per Inch | 12 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNJC |
| 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 |
|---|---|
| MS51831-107 PRIMARY | Defense Logistics Agency Dba Defense Supply Center Philadelphia (USA) |
| Reference | Meaning |
|---|---|
| MS51831-107 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
NSN 5325-01-359-6759 is a Insert,screw Thread, manufactured by Defense Logistics Agency Dba Defense Supply Center Philadelphia, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-359-6759 has 1 manufacturer part number on file: MS51831-107 (Defense Logistics Agency Dba Defense Supply Center Philadelphia).
Key specifications for MS51831-107: Length: 0.797 INCHES MINIMUM AND 0.827 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.712 INCHES NOMINAL IN; Insert Size: 0.8125-16 UN-2A A. 15 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.