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Technical Data Sheet
PartsTable / COMPONENT / 2-56X3/4SKTBTNHD32-303
2-56X3/4SKTBTNHD32-303 ✓ Verified by PartsTable
— · BOLT SCREW
WHAT YOU NEED TO KNOW
Grade/class stamped on head determines strength Metric and imperial threads look similar — measure pitch
Verify thread pitch — metric != imperial
PRODUCT OVERVIEW

The 2-56X3/4SKTBTNHD32-303 is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-054-5643, indicating validated use in U.S. government and defense logistics supply chains.

Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
2-56X3/4SKTBTNHD32-303
NSN: 5305-00-054-5643
FSC: 5305
CAGE: 70276 — ALLEN MFG CO SUB OF CHICAGO PNEUMATIC TOOL CO (USA)
SPECIFICATIONS
Part Number2-56X3/4SKTBTNHD32-303
NSN5305-00-054-5643
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 2-56X3/4SKTBTNHD32-303 · OEM ⚠ VERIFY BEFORE ORDERING Verify thread pitch before ordering — metric (M8×1.25) ≠ imperial (5/16-18). Wrong thread = wrong part. Grade/class stamped on bolt head determines tensile strength ✓ BROKER TIP Grade/class stamped on head determines tensile strength. Grade 8 > Grade 5 > Grade 2. Always confirm head marking matches specification requirement PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
THREAD CLASS: 2A A
•
SCREW SURFACE TREATMENT: PASSIVATE
•
SCREW MATERIAL DOCUMENT AND CLASSIFICATION: 66 FED STD ALL MATERIAL RESPONSES
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
•
SCREW MATERIAL: STEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 316
•
MINIMUM TENSILE STRENGTH: 80000 POUNDS PER SQUARE INCH LBS
•
NOMINAL THREAD DIAMETER: 0.086 INCHES IN
TECHNICAL CHARACTERISTICS (FLIS)
THREAD CLASS2A A
END ITEM IDENTIFICATIONMRAP - COUGAR AMBULANCE
SCREW SURFACE TREATMENTPASSIVATE
SCREW MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD ALL MATERIAL RESPONSES
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
SCREW MATERIALSTEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 316
MINIMUM TENSILE STRENGTH80000 POUNDS PER SQUARE INCH LBS
NOMINAL THREAD DIAMETER0.086 INCHES IN
SCREW SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE
THREAD QUANTITY PER INCH56
VERIFIED SUBSTITUTES & CROSS-REFERENCES 23
151700-0155Interchangeable
interchangeable cross-reference
interchangeable
23008Interchangeable
interchangeable cross-reference
interchangeable
4216-031-G855Interchangeable
interchangeable cross-reference
interchangeable
245319Interchangeable
interchangeable cross-reference
interchangeable
23064ADXInterchangeable
interchangeable cross-reference
interchangeable
220-0305-002Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 2-56X3/4SKTBTNHD32-303?
2-56X3/4SKTBTNHD32-303 is a 2-56X3/4SKTBTNHD32-303.
What parts can replace 2-56X3/4SKTBTNHD32-303?
There are 23 known substitutes for 2-56X3/4SKTBTNHD32-303: 151700-0155, 23008, 4216-031-G855 and 20 more. Substitute compatibility should be verified for your specific system.
Is 2-56X3/4SKTBTNHD32-303 still available?
2-56X3/4SKTBTNHD32-303 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026