The Retainer,nut and Bolt, cataloged under National Stock Number 5340-01-044-9031, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Howmet Global Fastening Systems Inc. Government technical data includes 9 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5340-01-044-9031 |
| Primary Part Number | K52388-5 |
| Item Name | Retainer,nut and Bolt |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Howmet Global Fastening Systems Inc |
| Status | ACTIVE |
| Distance Between Mounting Hole Centers | 0.998 INCHES MINIMUM AND 1.002 INCHES MAXIMUM IN |
| Style Designator | ANCHOR |
| Material Document and Classification | AMS 5732 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5525 ASSN STD SINGLE MATERIAL RESPONSE |
| Mounting Hole Diameter | 0.130 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN |
| Material Thickness | 0.040 INCHES MAXIMUM IN |
| Center to Center Distance Between Cup and Mounting Hole | 0.495 INCHES MINIMUM AND 0.505 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE |
| Material | IRON ALLOY 660 |
| Width Between Cup Flats | 0.376 INCHES MINIMUM AND 0.386 INCHES MAXIMUM 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 |
|---|---|
| K52388-5 | Howmet Global Fastening Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| NS103494-054 | 3/2 Design control — primary reference U.S. Government activity |
| ST3M440-5 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| 642AS0727 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
NSN 5340-01-044-9031 is a Retainer,nut and Bolt, manufactured by Howmet Global Fastening Systems Inc, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-044-9031 has 1 manufacturer part number on file: K52388-5 (Howmet Global Fastening Systems Inc).
Key specifications for K52388-5: Overall Height: 0.185 INCHES MAXIMUM IN; Distance Between Mounting Hole Centers: 0.998 INCHES MINIMUM AND 1.002 INCHES MAXIMUM IN; Style Designator: ANCHOR; Material Document and Classification: AMS 5732 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5525 ASSN STD SINGLE MATERIAL RESPONSE. 9 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.