The Screw,lag, cataloged under National Stock Number 5305-00-407-6543, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-407-6543 |
| Primary Part Number | FF-B-561D |
| Item Name | Screw,lag |
| FSC / FSG | 5305 / 53 — No Item Name Available |
| Manufacturer | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| Status | ACTIVE |
| Nonmachine Thread Style | GIMLET POINT (TYPE A, AB OR BA) |
| Nonmachine Nominal Thread Diameter | 0.500 INCHES IN |
| Material Document and Classification | 66 FED STD ALL MATERIAL RESPONSES OVERALL |
| Width Between Flats | 0.750 INCHES NOMINAL IN |
| Head Height | 0.328 INCHES NOMINAL IN |
| Head Style | HEXAGON |
| Fastener Length | 4.500 INCHES NOMINAL IN |
| Surface Treatment | PASSIVATE OVERALL |
| Nondefinitive Spec/std Data | 3 TYPE AND C GRADE |
| Test Data Document | 81348-STDNO151 DRAWING (THIS IS THE BASIC GOVERNING DRAWING, SUCH AS A CONTRACTOR DRAWING, ORIGINAL EQUIPMENT MANUFACTURER DRAWING, ETC.; EXCLUDES ANY SPECIFICATION, STANDARD OR OTHER DOCUMENT THAT MAY BE REFERENCED IN A BASIC GOVERNING DRAWING) |
| Material | STEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 310 OR STEEL COMP 316 OVERALL |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| FF-B-561D | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| FFB561TYPEVGRADEC | Federal Specifications Promulgated by General Services Administration Washington DC (USA) |
| 5371 | Utilities Service Co Sub of Lehigh Structural Steel Co (USA) |
NSN 5305-00-407-6543 is a Screw,lag, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 5305 (No Item Name Available). Status: active.
NSN 5305-00-407-6543 has 3 cross-referenced part numbers: FF-B-561D (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), FFB561TYPEVGRADEC (Federal Specifications Promulgated by General Services Administration Washington DC), 5371 (Utilities Service Co Sub of Lehigh Structural Steel Co).
There are 11 known substitutes for 5305-00-407-6543: 1650-00-130-9354, 5950-00-156-0846, 5305-00-177-5624 and 8 more. Verify interchangeability with system specifications before substitution.
Key specifications for FF-B-561D: Nonmachine Thread Style: GIMLET POINT (TYPE A, AB OR BA); Nonmachine Nominal Thread Diameter: 0.500 INCHES IN; Material Document and Classification: 66 FED STD ALL MATERIAL RESPONSES OVERALL; Width Between Flats: 0.750 INCHES NOMINAL IN. 11 total characteristics are documented in the Federal Logistics Information System.