PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

3/4-10UNC-2A X 2IN,TYI,CLASS AScrew,cap,hexagon Head

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 5305-01-255-3503 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-01-255-3503 — this item is cataloged by the U.S. Government under National Stock Number 5305-01-255-3503. Primary manufacturer part number: 3/4-10UNC-2A X 2IN,TYI,CLASS A.
Features
  • Screw,cap,hexagon Head — FSC 5305
  • Thread Direction: RIGHT-HAND
  • Departure From Cited Document: MATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMSOL INSTRUCTION FOR LEVEL 1 ITEMS
  • Nondefinitive Spec/std Data: 400 GRADE
  • Criticality Code Justification: ZZZW
  • Thread Length: 2.000 INCHES NOMINAL IN
  • 4 verified cross-references
  • Primary manufacturer: Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
General Description

The Screw,cap,hexagon Head, cataloged under National Stock Number 5305-01-255-3503, 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 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 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: Active.

Technical Specifications
ParameterValue
NSN5305-01-255-3503
Primary Part Number3/4-10UNC-2A X 2IN,TYI,CLASS A
Item NameScrew,cap,hexagon Head
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
Thread DirectionRIGHT-HAND
Departure From Cited DocumentMATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMSOL INSTRUCTION FOR LEVEL 1 ITEMS
Nondefinitive Spec/std Data400 GRADE
Criticality Code JustificationZZZW
Thread Length2.000 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5305-01-041-2825 INTERCHANGEABLE
Screw,cap,hexagon Head
5305-01-041-2828 INTERCHANGEABLE
Screw,cap,hexagon Head
5305-01-079-9585 INTERCHANGEABLE
Screw,cap,hexagon Head
5307-01-187-4938 INTERCHANGEABLE
Stud,continuous Thread
5307-01-198-4194 INTERCHANGEABLE
Stud,plain
5307-01-225-2943 INTERCHANGEABLE
Stud,continuous Thread
5305-01-226-0116 INTERCHANGEABLE
Screw,cap,hexagon Head
5305-01-270-6171 INTERCHANGEABLE
Screw,cap,hexagon Head
5305-01-290-0027 INTERCHANGEABLE
Screw,cap,hexagon Head
5305-01-302-5223 INTERCHANGEABLE
Screw,cap,hexagon Head
Cross-Reference Index
Part NumberManufacturer
3/4-10UNC-2A X 2IN,TYI,CLASS A Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-DTL-1222 QQ-N-281 GR400L1 Naval Inventory Control Point Mechanicsburg (USA)
3/4-10UNC-2A X 2IN,TYI,CLASS A Naval Inventory Control Point Mechanicsburg (USA)
MIL-DTL-1222 QQ-N-281 GR400 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5305-01-041-2825INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
5305-01-041-2828INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
5305-01-079-9585INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
5307-01-187-4938INTERCHANGEABLE
STUD,CONTINUOUS THREAD
5307-01-198-4194INTERCHANGEABLE
STUD,PLAIN
5307-01-225-2943INTERCHANGEABLE
STUD,CONTINUOUS THREAD
5305-01-226-0116INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
5305-01-270-6171INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
5305-01-290-0027INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
5305-01-302-5223INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
5307-01-306-7531INTERCHANGEABLE
STUD,CONTINUOUS THREAD
5307-01-306-7533INTERCHANGEABLE
STUD,CONTINUOUS THREAD

Frequently Asked Questions

What is NSN 5305-01-255-3503?

NSN 5305-01-255-3503 is a Screw,cap,hexagon Head, 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.

What are the part numbers for NSN 5305-01-255-3503?

NSN 5305-01-255-3503 has 4 cross-referenced part numbers: 3/4-10UNC-2A X 2IN,TYI,CLASS A (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-DTL-1222 QQ-N-281 GR400L1 (Naval Inventory Control Point Mechanicsburg), 3/4-10UNC-2A X 2IN,TYI,CLASS A (Naval Inventory Control Point Mechanicsburg), MIL-DTL-1222 QQ-N-281 GR400 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 5305-01-255-3503?

There are 12 known substitutes for 5305-01-255-3503: 5305-01-041-2825, 5305-01-041-2828, 5305-01-079-9585 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 3/4-10UNC-2A X 2IN,TYI,CLASS A?

Key specifications for 3/4-10UNC-2A X 2IN,TYI,CLASS A: Thread Direction: RIGHT-HAND; Departure From Cited Document: MATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMSOL INSTRUCTION FOR LEVEL 1 ITEMS; Nondefinitive Spec/std Data: 400 GRADE; Criticality Code Justification: ZZZW. 5 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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