The Clamp,loop, cataloged under National Stock Number 5340-01-346-2475, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Maradyne Corporation. Government technical data includes 8 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5340-01-346-2475 |
| Primary Part Number | F-223C31K074 |
| Item Name | Clamp,loop |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Maradyne Corporation |
| Status | ACTIVE |
| Fastening Device Type | PLAIN HEXAGON HEAD SCREW |
| Style Designator | CENTER MOUNT |
| Diameter | 0.410 INCHES NOMINAL IN |
| Material Thickness | 0.150 INCHES NOMINAL IN |
| Distance From Loop Center to Tongue End | 10.030 INCHES NOMINAL IN |
| Tongue Hole Type | ROUND, UNTHREADED |
| Center to Center Distance Between Loop and Mounting Hole | 9.530 INCHES NOMINAL IN |
| Loop Inside Diameter | 18.000 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 |
|---|---|
| F-223C31K074 PRIMARY | Maradyne Corporation (USA) |
| Reference | Meaning |
|---|---|
| F-223C31K074 | 5/9 Secondary reference United Air Filter, Inc. |
| F-223C31K074 | 3/9 Design control — primary reference Greenlees Filter Llc |
NSN 5340-01-346-2475 is a Clamp,loop, manufactured by Maradyne Corporation, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-346-2475 has 1 manufacturer part number on file: F-223C31K074 (Maradyne Corporation).
Key specifications for F-223C31K074: Fastening Device Type: PLAIN HEXAGON HEAD SCREW; Style Designator: CENTER MOUNT; Diameter: 0.410 INCHES NOMINAL IN; Overall Width: 1.500 INCHES NOMINAL IN. 8 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.