The Standoff,threaded,spacing, cataloged under National Stock Number 5340-01-248-4545, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Raytheon Company Div Rmd Strategic. Government technical data includes 20 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-248-4545 |
| Primary Part Number | 721617-289 |
| Item Name | Standoff,threaded,spacing |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Raytheon Company Div Rmd Strategic |
| Status | ACTIVE |
| Flange Width Across Flats | 0.312 INCHES NOMINAL IN |
| Length | 1.500 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | QQ-P-416 TY 2 CL 1 FED SPEC SINGLE TREATMENT RESPONSE STANDOFF |
| Flange Thickness | 1.060 INCHES NOMINAL IN |
| Thread Length | 0.500 INCHES NOMINAL LEFT INTERNAL (INCLUDES THRU THREAD) IN |
| Thread Length | 0.440 INCHES NOMINAL RIGHT EXTERNAL IN |
| Style Designator | FLANGED WITH LEFT INTERNAL THREAD |
| Material Document and Classification | ASTM A108 ASSN STD SINGLE MATERIAL RESPONSE STANDOFF |
| Thread Direction | RIGHT-HAND RIGHT EXTERNAL |
| Thread Direction | RIGHT-HAND LEFT INTERNAL (INCLUDES THRU THREAD) |
| Nominal Thread Size | 0.164 INCHES LEFT INTERNAL (INCLUDES THRU THREAD) IN |
| Nominal Thread Size | 0.164 INCHES RIGHT EXTERNAL IN |
| Surface Treatment | CADMIUM AND CHROMATE STANDOFF |
| Thread Class | 2A RIGHT EXTERNAL A |
| Thread Class | 2B LEFT INTERNAL (INCLUDES THRU THREAD) |
| Thread Quantity Per Inch | 32 LEFT INTERNAL (INCLUDES THRU THREAD) |
| Thread Quantity Per Inch | 32 RIGHT EXTERNAL |
| Material | STEEL COMP 1213 STANDOFF |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) LEFT INTERNAL (INCLUDES THRU THREAD) |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) RIGHT EXTERNAL |
| 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 |
|---|---|
| 721617-289 | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| 721617-289 PRIMARY | Raytheon Company Div Rmd Strategic (USA) |
| 721617-289 | Lobaugh Rollin J (USA) |
| Reference | Meaning |
|---|---|
| 721617-289 | 5/9 Secondary reference U.S. Government activity |
| 721617-289 | 5/9 Secondary reference Modern Machine Works, Inc. Dba Modern Machine Works |
NSN 5340-01-248-4545 is a Standoff,threaded,spacing, manufactured by Raytheon Company Div Rmd Strategic, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-248-4545 has 3 manufacturer part numbers on file: 721617-289 (Fastener Innovation Technology, Inc. Dba F I T), 721617-289 (Raytheon Company Div Rmd Strategic), 721617-289 (Lobaugh Rollin J).
Key specifications for 721617-289: Flange Width Across Flats: 0.312 INCHES NOMINAL IN; Length: 1.500 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-P-416 TY 2 CL 1 FED SPEC SINGLE TREATMENT RESPONSE STANDOFF; Flange Thickness: 1.060 INCHES NOMINAL IN. 20 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.