PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

B3-5X9.5DIN7981A2Screw,tapping

Din Deutsches Institut Fur Normung Ev · NSN 5305-01-624-3950 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-01-624-3950 — this item is cataloged by the U.S. Government under National Stock Number 5305-01-624-3950. Primary manufacturer part number: B3-5X9.5DIN7981A2.
Features
  • Screw,tapping — FSC 5305
  • Fastener Length: 9.5 MILLIMETERS NOMINAL MM
  • Head Height: 2.6 MILLIMETERS MAXIMUM MM
  • Nonmachine Thread Style: GIMLET POINT (TYPE A, AB OR BA)
  • Head Diameter: 6.9 MILLIMETERS MAXIMUM MM
  • Internal Drive Style: CROSS RECESS TYPE 1
  • Nonmachine Nominal Thread Diameter: 3.5 MILLIMETERS MM
  • Head Style: PAN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Screw,tapping, cataloged under National Stock Number 5305-01-624-3950, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Din Deutsches Institut Fur Normung Ev. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5305-01-624-3950
Primary Part NumberB3-5X9.5DIN7981A2
Item NameScrew,tapping
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerDin Deutsches Institut Fur Normung Ev
StatusACTIVE
Fastener Length9.5 MILLIMETERS NOMINAL MM
Head Height2.6 MILLIMETERS MAXIMUM MM
Nonmachine Thread StyleGIMLET POINT (TYPE A, AB OR BA)
Head Diameter6.9 MILLIMETERS MAXIMUM MM
Internal Drive StyleCROSS RECESS TYPE 1
Nonmachine Nominal Thread Diameter3.5 MILLIMETERS MM
Head StylePAN
MaterialSTEEL OVERALL
Surface TreatmentZINC OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5305-00-052-8241 INTERCHANGEABLE
Screw,tapping
5305-00-058-1082128270 INTERCHANGEABLE
Screw,tapping
Navistar Intl Corp Truck Br Ohio Plant
5305-00-432-41720139048 INTERCHANGEABLE
Screw,tapping
Fastenal Company
5305-00-432-4205MS51861-49 INTERCHANGEABLE
Screw,tapping
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5305-00-879-794180060 INTERCHANGEABLE
Screw,tapping
Hillman Group, Inc., the
5305-01-146-2533MS51861-1C INTERCHANGEABLE
Screw,tapping
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
Cross-Reference Index
Part NumberManufacturer
B3-5X9.5DIN7981A2 Din Deutsches Institut Fur Normung Ev (DEU)
DIN7981-ST3.5X9.5-A2 Din Deutsches Institut Fur Normung Ev (DEU)
MS51861 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
NASM51861 National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
Related Parts
5305-00-052-8241INTERCHANGEABLE
SCREW,TAPPING
5305-00-058-1082INTERCHANGEABLE
SCREW,TAPPING
128270
5305-00-432-4172INTERCHANGEABLE
SCREW,TAPPING
0139048
5305-00-432-4205INTERCHANGEABLE
SCREW,TAPPING
MS51861-49
5305-00-879-7941INTERCHANGEABLE
SCREW,TAPPING
80060
5305-01-146-2533INTERCHANGEABLE
SCREW,TAPPING
MS51861-1C

Frequently Asked Questions

What is NSN 5305-01-624-3950?

NSN 5305-01-624-3950 is a Screw,tapping, manufactured by Din Deutsches Institut Fur Normung Ev, classified under FSC 5305 (No Item Name Available). Status: active.

What are the part numbers for NSN 5305-01-624-3950?

NSN 5305-01-624-3950 has 4 cross-referenced part numbers: B3-5X9.5DIN7981A2 (Din Deutsches Institut Fur Normung Ev), DIN7981-ST3.5X9.5-A2 (Din Deutsches Institut Fur Normung Ev), MS51861 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), NASM51861 (National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use).

What NSN replaces 5305-01-624-3950?

There are 6 known substitutes for 5305-01-624-3950: 5305-00-052-8241, 5305-00-058-1082, 5305-00-432-4172 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of B3-5X9.5DIN7981A2?

Key specifications for B3-5X9.5DIN7981A2: Fastener Length: 9.5 MILLIMETERS NOMINAL MM; End Item Identification: STRYKER VEHICLE; Head Height: 2.6 MILLIMETERS MAXIMUM MM; Nonmachine Thread Style: GIMLET POINT (TYPE A, AB OR BA). 11 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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