The Clamp,block, cataloged under National Stock Number 5340-01-257-5230, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company Div Defense. 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. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-257-5230 |
| Primary Part Number | 68A411716-2003 |
| Item Name | Clamp,block |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Clamping Hole Quantity | 33 |
| Style Designator | RECTANGULAR |
| Material Document and Classification | MIL-P-15035 TYPE FGB MIL SPEC SINGLE MATERIAL RESPONSE |
| Clamping Hole Diameter | 0.266 INCHES MINIMUM AND 0.270 INCHES MAXIMUM FIRST HOLE IN |
| Clamping Hole Diameter | 0.391 INCHES MINIMUM AND 0.395 INCHES MAXIMUM THIRD HOLE IN |
| Clamping Hole Diameter | 0.3992 INCHES MINIMUM AND 0.4132 INCHES MAXIMUM SECOND HOLE IN |
| Distance From Center of Mounting Hole to Edge Along the Width | 0.430 INCHES NOMINAL0.430 INCHES NOMINAL IN |
| Material | PLASTIC |
| Center to Center Distance Between First and Second Clamping Holes | 0.230 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 |
|---|---|
| 68A411716-2003 PRIMARY | The Boeing Company Div Defense (USA) |
NSN 5340-01-257-5230 is a Clamp,block, manufactured by The Boeing Company Div Defense, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-257-5230 has 1 manufacturer part number on file: 68A411716-2003 (The Boeing Company Div Defense).
Key specifications for 68A411716-2003: Clamping Hole Quantity: 33; Style Designator: RECTANGULAR; Material Document and Classification: MIL-P-15035 TYPE FGB MIL SPEC SINGLE MATERIAL RESPONSE; Overall Length: 2.530 INCHES NOMINAL2.530 INCHES NOMINAL IN. 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.