The Standoff,threaded,spacing, cataloged under National Stock Number 5340-01-399-4599, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Unicorp.. Government technical data includes 13 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-399-4599 |
| Primary Part Number | P531-M09-F09-440 |
| Item Name | Standoff,threaded,spacing |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Unicorp. |
| Status | ACTIVE |
| Width Across Flats | 0.250 INCHES NOMINAL IN |
| Length | 0.531 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | MIL-F-14072A E300 MIL SPEC SINGLE TREATMENT RESPONSE STANDOFF A |
| Thread Length | 0.531 INCHES NOMINAL LEFT INTERNAL (INCLUDES THRU THREAD) IN |
| Style Designator | INTERNALLY THREADED FULL LENGTH |
| Material Document and Classification | QQ-S-763,CLASS 303,COND A FED SPEC SINGLE MATERIAL RESPONSE STANDOFF |
| Thread Direction | RIGHT-HAND LEFT INTERNAL (INCLUDES THRU THREAD) |
| Nominal Thread Size | 0.112 INCHES LEFT INTERNAL (INCLUDES THRU THREAD) IN |
| Cross-Sectional Shape | HEXAGON |
| Surface Treatment | PASSIVATE STANDOFF |
| Thread Quantity Per Inch | 40 LEFT INTERNAL (INCLUDES THRU THREAD) |
| Material | STEEL COMP 303 STANDOFF |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) LEFT INTERNAL (INCLUDES THRU THREAD) |
| 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 |
|---|---|
| P531-M09-F09-440 PRIMARY | Unicorp. (USA) |
| Reference | Meaning |
|---|---|
| 65132G-81 | 5/9 Secondary reference Orbit International Corp. Div Orbit Instrument |
NSN 5340-01-399-4599 is a Standoff,threaded,spacing, manufactured by Unicorp., classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-399-4599 has 1 manufacturer part number on file: P531-M09-F09-440 (Unicorp.).
Key specifications for P531-M09-F09-440: Width Across Flats: 0.250 INCHES NOMINAL IN; Length: 0.531 INCHES NOMINAL IN; Surface Treatment Document and Classification: MIL-F-14072A E300 MIL SPEC SINGLE TREATMENT RESPONSE STANDOFF A; Thread Length: 0.531 INCHES NOMINAL LEFT INTERNAL (INCLUDES THRU THREAD) IN. 13 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.