PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

40021Screw,shoulder

Fastenal Company Dba Fastenal Co · NSN 5305-01-551-0894 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-01-551-0894 — this item is cataloged by the U.S. Government under National Stock Number 5305-01-551-0894. Primary manufacturer part number: 40021.
Features
  • Screw,shoulder — FSC 5305
  • Thread Series Designator: M
  • Head Style: DEE
  • Distance From Centerline to Flat: 9.00 MILLIMETERS NOMINAL MM
  • Fastener Length: 31.60 MILLIMETERS MINIMUM AND 32.65 MILLIMETERS MAXIMUM MM
  • Thread Length: 15.60 MILLIMETERS MINIMUM AND 16.40 MILLIMETERS MAXIMUM MM
  • Head Height: 7.78 MILLIMETERS MINIMUM AND 8.00 MILLIMETERS MAXIMUM MM
  • Head Diameter: 17.73 MILLIMETERS MINIMUM AND 18.00 MILLIMETERS MAXIMUM MM
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Screw,shoulder, cataloged under National Stock Number 5305-01-551-0894, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Fastenal Company Dba Fastenal Co. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5305-01-551-0894
Primary Part Number40021
Item NameScrew,shoulder
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerFastenal Company Dba Fastenal Co
StatusCANCELLED
Thread Series DesignatorM
Head StyleDEE
Distance From Centerline to Flat9.00 MILLIMETERS NOMINAL MM
Fastener Length31.60 MILLIMETERS MINIMUM AND 32.65 MILLIMETERS MAXIMUM MM
Thread Length15.60 MILLIMETERS MINIMUM AND 16.40 MILLIMETERS MAXIMUM MM
Head Height7.78 MILLIMETERS MINIMUM AND 8.00 MILLIMETERS MAXIMUM MM
Head Diameter17.73 MILLIMETERS MINIMUM AND 18.00 MILLIMETERS MAXIMUM MM
Thread Pitch in Millimeters1.5
Shoulder Length16.00 MILLIMETERS NOMINAL OVERALL MM
Nominal Thread Diameter10.0 MILLIMETERS MM
Width Across Flats6.02 MILLIMETERS MINIMUM AND 6.10 MILLIMETERS MAXIMUM MM
Internal Drive StyleHEXAGON
MaterialSTEEL OVERALL
Shoulder Diameter12.00 MILLIMETERS NOMINAL OVERALL MM
Thread DirectionRIGHT-HAND
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5950-00-021-9081C702866114 INTERCHANGEABLE
Transformer,power
Kearfott Corporation Div Guidance and Navigation Division
4720-00-414-5072S50HL3-8X1-2X50 INTERCHANGEABLE
Tubing,nonmetallic
Saint-Gobain Performance Plastics
5325-00-639-48984002-1 INTERCHANGEABLE
Stud Assembly,turnlock Fastener
Howmet Global Fastening Systems Inc Div Camloc Products
5945-00-883-1094 INTERCHANGEABLE
Relay,electromagnetic
5985-01-054-08924002-1 INTERCHANGEABLE
Waveguide Assembly
Electro-Matic Products Co
4210-01-080-1458 INTERCHANGEABLE
Coupling,hose,fire Fighting
6240-01-082-2832133-02 INTERCHANGEABLE
Lamp,incandescent
Carley Dba Carley Lamps
5962-01-124-7935 INTERCHANGEABLE
Microcircuit,digital
2530-01-261-5095HAN-40021-000 INTERCHANGEABLE
Plate,wear,brake Shoe
Tiffin Parts, L.l.c. Div Subsidiary of Pettibone Corp.
4130-01-369-132590013A7000 INTERCHANGEABLE
Plenum and Filter Box Assembly
M & M Assembly, Llc Dba M & M Assembly Llc
Cross-Reference Index
Part NumberManufacturer
40021 PRIMARY Fastenal Company Dba Fastenal Co (USA)
3007826 General Dynamics Land Systems - Force Protection Inc. Dba Gdls Div Gdls-Fp (USA)
Related Parts
5950-00-021-9081INTERCHANGEABLE
TRANSFORMER,POWER
C702866114
4720-00-414-5072INTERCHANGEABLE
TUBING,NONMETALLIC
S50HL3-8X1-2X50
5325-00-639-4898INTERCHANGEABLE
STUD ASSEMBLY,TURNLOCK FASTENER
4002-1
5945-00-883-1094INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
5985-01-054-0892INTERCHANGEABLE
WAVEGUIDE ASSEMBLY
4002-1
4210-01-080-1458INTERCHANGEABLE
COUPLING,HOSE,FIRE FIGHTING
6240-01-082-2832INTERCHANGEABLE
LAMP,INCANDESCENT
133-02
5962-01-124-7935INTERCHANGEABLE
MICROCIRCUIT,DIGITAL
2530-01-261-5095INTERCHANGEABLE
PLATE,WEAR,BRAKE SHOE
HAN-40021-000
4130-01-369-1325INTERCHANGEABLE
PLENUM AND FILTER BOX ASSEMBLY
90013A7000
8145-01-444-3771INTERCHANGEABLE
SHIPPING AND STORAGE CONTAINER,E
4002-1
1005-01-643-9226INTERCHANGEABLE
PISTOL,TARGET
40021

Frequently Asked Questions

What is NSN 5305-01-551-0894?

NSN 5305-01-551-0894 is a Screw,shoulder, manufactured by Fastenal Company Dba Fastenal Co, classified under FSC 5305 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5305-01-551-0894?

NSN 5305-01-551-0894 has 2 cross-referenced part numbers: 40021 (Fastenal Company Dba Fastenal Co), 3007826 (General Dynamics Land Systems - Force Protection Inc. Dba Gdls Div Gdls-Fp).

What NSN replaces 5305-01-551-0894?

There are 12 known substitutes for 5305-01-551-0894: 5950-00-021-9081, 4720-00-414-5072, 5325-00-639-4898 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 40021?

Key specifications for 40021: Part Name Assigned by Controlling Agency: SCREW SHOULDER; Special Features: FINISH: BLACK OXIDE (THERMAL OR CHEMICAL) ON UN-GROUND SURFACES; THREADS 5G6G; Thread Series Designator: M; Head Style: DEE. 18 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5305-01-551-0894 still in active supply?

NSN 5305-01-551-0894 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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