PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

27604Screw,cap,hexagon Head

Fastenal Company Dba Fastenal Co · NSN 5305-01-556-6211 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-01-556-6211 — this item is cataloged by the U.S. Government under National Stock Number 5305-01-556-6211. Primary manufacturer part number: 27604.
Features
  • Screw,cap,hexagon Head — FSC 5305
  • Material: STEEL OVERALL
  • Extended Washer Thickness: 0.019 INCHES MINIMUM AND 0.031 INCHES MAXIMUM IN
  • Thread Direction: RIGHT-HAND
  • Head Style: HEXAGON EXTENDED WASHER
  • Extended Washer Diameter: 0.384 INCHES MINIMUM AND 0.414 INCHES MAXIMUM IN
  • Head Height: 0.105 INCHES MINIMUM AND 0.120 INCHES MAXIMUM IN
  • Thread Class: 2A A
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Screw,cap,hexagon Head, cataloged under National Stock Number 5305-01-556-6211, 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 14 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. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5305-01-556-6211
Primary Part Number27604
Item NameScrew,cap,hexagon Head
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerFastenal Company Dba Fastenal Co
StatusCANCELLED
MaterialSTEEL OVERALL
Extended Washer Thickness0.019 INCHES MINIMUM AND 0.031 INCHES MAXIMUM IN
Thread DirectionRIGHT-HAND
Head StyleHEXAGON EXTENDED WASHER
Extended Washer Diameter0.384 INCHES MINIMUM AND 0.414 INCHES MAXIMUM IN
Head Height0.105 INCHES MINIMUM AND 0.120 INCHES MAXIMUM IN
Thread Class2A A
Fastener Length1.25 INCHES NOMINAL IN
Thread Quantity Per Inch32
Thread Length1.25 INCHES NOMINAL IN
Width Between Flats0.305 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
Nominal Thread Diameter0.190 INCHES IN
Thread Series DesignatorUNF
Surface TreatmentZINC OVERALL
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 3
5950-00-615-5101 INTERCHANGEABLE
Transformer,power
5995-01-157-812827604 INTERCHANGEABLE
Cable Assembly,radio Frequency
Viant Collegeville Llc
5340-01-283-167027604 INTERCHANGEABLE
Plunger,quick Release
Jergens Inc Div Tooling Components Division
Cross-Reference Index
Part NumberManufacturer
27604 PRIMARY Fastenal Company Dba Fastenal Co (USA)
3593564C1 Navistar Intl Corp Truck Br Ohio Plant (USA)
12759-00538 Fastenal Company Dba Fastenal Co (USA)
3593564C1 Nd Defense Llc (USA)
Related Parts
5950-00-615-5101INTERCHANGEABLE
TRANSFORMER,POWER
5995-01-157-8128INTERCHANGEABLE
CABLE ASSEMBLY,RADIO FREQUENCY
27604
5340-01-283-1670INTERCHANGEABLE
PLUNGER,QUICK RELEASE
27604

Frequently Asked Questions

What is NSN 5305-01-556-6211?

NSN 5305-01-556-6211 is a Screw,cap,hexagon Head, manufactured by Fastenal Company Dba Fastenal Co, classified under FSC 5305 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5305-01-556-6211?

NSN 5305-01-556-6211 has 4 cross-referenced part numbers: 27604 (Fastenal Company Dba Fastenal Co), 3593564C1 (Navistar Intl Corp Truck Br Ohio Plant), 12759-00538 (Fastenal Company Dba Fastenal Co), 3593564C1 (Nd Defense Llc).

What NSN replaces 5305-01-556-6211?

There are 3 known substitutes for 5305-01-556-6211: 5950-00-615-5101, 5995-01-157-8128, 5340-01-283-1670. Verify interchangeability with system specifications before substitution.

What are the specifications of 27604?

Key specifications for 27604: Material: STEEL OVERALL; Part Name Assigned by Controlling Agency: SCREW,HH MACH 10-32 X 1 1/4; Extended Washer Thickness: 0.019 INCHES MINIMUM AND 0.031 INCHES MAXIMUM IN; Thread Direction: RIGHT-HAND. 16 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5305-01-556-6211 still in active supply?

NSN 5305-01-556-6211 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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