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PartsTable / COMPONENT / TYPE III STYLE 4C
TYPE III STYLE 4C ✓ 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 SCREW,MACHINE is a the manufacturer industrial component. Key specifications include color: BLACK, thread_class: 2A A, thread_length: 0.313 INCHES NOMINAL IN, screw_material: STEEL COMP 302 OR STEEL COMP 305, fastener_length: 0.563 INCHES NOMINAL IN, screw_surface_treatment: OXIDE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-01-229-7855, 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
TYPE III STYLE 4C
NSN: 5305-01-229-7855
FSC: 5305
CAGE: 81348 — FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC (USA)
SPECIFICATIONS
colorBLACK
thread_class2A A
thread_length0.313 INCHES NOMINAL IN
screw_materialSTEEL COMP 302 OR STEEL COMP 305
fastener_length0.563 INCHES NOMINAL IN
screw_surface_treatmentOXIDE
thread_quantity_per_inch40
thread_series_designatorUNIFIED NATIONAL COARSE (UNC)
part_name_assigned_by_controlling_agencySET SCREW
NSN5305-01-229-7855
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: TYPE III STYLE 4C · 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
•
FASTENER LENGTH: 0.563 INCHES NOMINAL IN
•
COLOR: BLACK
•
THREAD CLASS: 2A A
•
THREAD QUANTITY PER INCH: 40
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
•
SCREW MATERIAL: STEEL COMP 302 OR STEEL COMP 305
•
SCREW SURFACE TREATMENT: OXIDE
TECHNICAL CHARACTERISTICS (FLIS)
FASTENER LENGTH0.563 INCHES NOMINAL IN
COLORBLACK
PART NAME ASSIGNED BY CONTROLLING AGENCYSET SCREW
THREAD CLASS2A A
THREAD QUANTITY PER INCH40
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
SCREW MATERIALSTEEL COMP 302 OR STEEL COMP 305
SCREW SURFACE TREATMENTOXIDE
THREAD LENGTH0.313 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
62886Interchangeable
interchangeable cross-reference
interchangeable
42906Interchangeable
interchangeable cross-reference
interchangeable
1605Interchangeable
interchangeable cross-reference
interchangeable
7124Interchangeable
interchangeable cross-reference
interchangeable
3S2791G211A11Interchangeable
interchangeable cross-reference
interchangeable
5305PL0819796Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is TYPE III STYLE 4C?
TYPE III STYLE 4C is a SCREW,MACHINE.
What parts can replace TYPE III STYLE 4C?
There are 7 known substitutes for TYPE III STYLE 4C: 62886, 42906, 1605 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for TYPE III STYLE 4C?
TYPE III STYLE 4C is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-01-229-7855. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026