The Clamp,loop, cataloged under National Stock Number 5340-01-323-8186, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. Government technical data includes 10 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5340-01-323-8186 |
| Primary Part Number | ST2399-04 |
| Item Name | Clamp,loop |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| Lug Hole Diameter | 0.204 INCHES NOMINAL IN |
| Style Designator | CLAMP & BRACKET |
| Material Thickness | 0.040 INCHES NOMINAL IN |
| Lug Width | 1.658 INCHES NOMINAL IN |
| Distance From Loop Center to Tongue End | 1.113 INCHES NOMINAL IN |
| Center to Center Distance Between First and Second Holes | 1.250 INCHES NOMINAL IN |
| Center to Center Distance Between Loop and Mounting Hole | 0.773 INCHES NOMINAL IN |
| Material | RUBBER CUSHION |
| Material | STEEL CORROSION RESISTING BAND |
| Loop Inside Diameter | 0.250 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 |
|---|---|
| ST2399-04 | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| Reference | Meaning |
|---|---|
| ST2399-04 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5340-01-323-8186 is a Clamp,loop, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-323-8186 has 1 manufacturer part number on file: ST2399-04 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).
Key specifications for ST2399-04: Lug Hole Diameter: 0.204 INCHES NOMINAL IN; Style Designator: CLAMP & BRACKET; Overall Width: 0.500 INCHES NOMINAL IN; Material Thickness: 0.040 INCHES NOMINAL IN. 10 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.