The Standoff,threaded,spacing, cataloged under National Stock Number 5340-01-504-7339, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems. Government technical data includes 24 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5340-01-504-7339 |
| Primary Part Number | 816-3468-001 |
| Item Name | Standoff,threaded,spacing |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems |
| Status | ACTIVE |
| Flange Width Across Flats | 0.562 INCHES NOMINAL IN |
| Length | 0.438 INCHES NOMINAL IN |
| Flange Thickness | 0.187 INCHES NOMINAL IN |
| Groove Diameter | 0.350 INCHES MINIMUM AND 0.360 INCHES MAXIMUM IN |
| Groove Radius | 0.032 INCHES NOMINAL IN |
| Thread Length | 0.357 INCHES NOMINAL RIGHT EXTERNAL IN |
| Thread Length | 0.450 INCHES NOMINAL LEFT INTERNAL (INCLUDES THRU THREAD) IN |
| Style Designator | PROJECTION AND FLANGE LEFT INTERNAL AND RIGHT EXTERNAL THREAD |
| Material Document and Classification | ASTM-B16/B16M-2000 NATIONAL SPEC ALL MATERIAL RESPONSES OVERALL |
| Diameter | 0.562 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND RIGHT EXTERNAL |
| Thread Direction | RIGHT-HAND LEFT INTERNAL (INCLUDES THRU THREAD) |
| Nominal Thread Size | 0.375 INCHES LEFT INTERNAL (INCLUDES THRU THREAD) IN |
| Nominal Thread Size | 0.438 INCHES RIGHT EXTERNAL IN |
| Cross-Sectional Shape | ROUND |
| Thread Class | 2A RIGHT EXTERNAL A |
| Thread Class | 2B LEFT INTERNAL (INCLUDES THRU THREAD) |
| Thread Quantity Per Inch | 24 LEFT INTERNAL (INCLUDES THRU THREAD) |
| Thread Quantity Per Inch | 20 RIGHT EXTERNAL |
| Material | COPPER ALLOY OVERALL |
| Right Projection Diameter | 0.350 INCHES MINIMUM AND 0.360 INCHES MAXIMUM IN |
| Thread Series Designator | UNF RIGHT EXTERNAL |
| Thread Series Designator | UNF LEFT INTERNAL (INCLUDES THRU THREAD) |
| Right Projection Length | 0.625 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 |
|---|---|
| 816-3468-001 PRIMARY | Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems (USA) |
| Reference | Meaning |
|---|---|
| 816-3468 | D/9 Drawing number reference only Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems |
NSN 5340-01-504-7339 is a Standoff,threaded,spacing, manufactured by Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-504-7339 has 1 manufacturer part number on file: 816-3468-001 (Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems).
Key specifications for 816-3468-001: Flange Width Across Flats: 0.562 INCHES NOMINAL IN; Length: 0.438 INCHES NOMINAL IN; Flange Thickness: 0.187 INCHES NOMINAL IN; Groove Diameter: 0.350 INCHES MINIMUM AND 0.360 INCHES MAXIMUM IN. 24 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.