The Standoff,threaded,spacing, cataloged under National Stock Number 5340-01-512-9977, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Matthew Warren, Inc Dba Raf Electronic Hardware Div Raf Electronic Hardware, Llc. 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. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-512-9977 |
| Primary Part Number | 2179-632-SS-20 |
| Item Name | Standoff,threaded,spacing |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Matthew Warren, Inc Dba Raf Electronic Hardware Div Raf Electronic Hardware, Llc |
| Status | ACTIVE |
| Width Across Flats | 0.3125 INCHES NOMINAL IN |
| Length | 1.000 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | MIL-F-14072D MIL SPEC SINGLE TREATMENT RESPONSE INSERT |
| Cross-Sectional Width | 0.3125 INCHES NOMINAL IN |
| Thread Length | 0.375 INCHES NOMINAL RIGHT INTERNAL IN |
| Style Designator | LEFT INTERNAL AND RIGHT INTERNAL THREADS |
| Material Document and Classification | ASTM-A-581 ASSN STD SINGLE MATERIAL RESPONSE INSERT |
| Cross-Sectional Length | 1.000 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND RIGHT INTERNAL |
| Nominal Thread Size | 0.138 INCHES RIGHT INTERNAL IN |
| Cross-Sectional Shape | HEXAGON |
| Surface Treatment | PASSIVATE INSERT |
| Thread Quantity Per Inch | 32 RIGHT INTERNAL |
| Material | STEEL CORROSION RESISTING INSERT |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) RIGHT INTERNAL |
| 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 |
|---|---|
| 2179-632-SS-20 PRIMARY | Matthew Warren, Inc Dba Raf Electronic Hardware Div Raf Electronic Hardware, Llc (USA) |
NSN 5340-01-512-9977 is a Standoff,threaded,spacing, manufactured by Matthew Warren, Inc Dba Raf Electronic Hardware Div Raf Electronic Hardware, Llc, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-512-9977 has 1 manufacturer part number on file: 2179-632-SS-20 (Matthew Warren, Inc Dba Raf Electronic Hardware Div Raf Electronic Hardware, Llc).
Key specifications for 2179-632-SS-20: Width Across Flats: 0.3125 INCHES NOMINAL IN; Length: 1.000 INCHES NOMINAL IN; Surface Treatment Document and Classification: MIL-F-14072D MIL SPEC SINGLE TREATMENT RESPONSE INSERT; Cross-Sectional Width: 0.3125 INCHES NOMINAL IN. 15 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.