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PartsTable / COMPONENT / 4316U
4316U ✓ 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,SHOULDER is a the manufacturer industrial component. Key specifications include material: STEEL COMP 303 OVERALL, head_style: FLAT CHAMFER, head_height: 0.155 INCHES NOMINAL IN, thread_class: 2A A, head_diameter: 0.312 INCHES NOMINAL IN, thread_length: 0.188 INCHES MINIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-954-3934, 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
4316U
NSN: 5305-00-954-3934
FSC: 5305
CAGE: 00141 — ROLLER BEARING CO OF AMERICA, INC DIV PIC DESIGN (USA)
SPECIFICATIONS
materialSTEEL COMP 303 OVERALL
head_styleFLAT CHAMFER
head_height0.155 INCHES NOMINAL IN
thread_class2A A
head_diameter0.312 INCHES NOMINAL IN
thread_length0.188 INCHES MINIMUM IN
shoulder_shapeROUND FIRST SHOULDER
fastener_length0.376 INCHES NOMINAL IN
shoulder_length0.188 INCHES NOMINAL FIRST SHOULDER IN
thread_directionRIGHT-HAND
shoulder_diameter0.188 INCHES NOMINAL FIRST SHOULDER IN
surface_treatmentPASSIVATE OVERALL
NSN5305-00-954-3934
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 4316U · 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
•
MATERIAL: STEEL COMP 303 OVERALL
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
•
THREAD QUANTITY PER INCH: 32
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
THREAD LENGTH: 0.188 INCHES MINIMUM IN
•
HEAD STYLE: FLAT CHAMFER
•
SHOULDER LENGTH: 0.188 INCHES NOMINAL FIRST SHOULDER IN
•
SHOULDER SHAPE: ROUND FIRST SHOULDER
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL COMP 303 OVERALL
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
THREAD QUANTITY PER INCH32
SURFACE TREATMENTPASSIVATE OVERALL
THREAD LENGTH0.188 INCHES MINIMUM IN
HEAD STYLEFLAT CHAMFER
SHOULDER LENGTH0.188 INCHES NOMINAL FIRST SHOULDER IN
SHOULDER SHAPEROUND FIRST SHOULDER
INTERNAL DRIVE STYLESLOT
HEAD HEIGHT0.155 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 26
13BInterchangeable
interchangeable cross-reference
interchangeable
BB43Interchangeable
interchangeable cross-reference
interchangeable
4316MInterchangeable
interchangeable cross-reference
interchangeable
13B4B1000041A14S00000Interchangeable
interchangeable cross-reference
interchangeable
A52491-70Interchangeable
interchangeable cross-reference
interchangeable
A-A-52491Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 4316U?
4316U is a SCREW,SHOULDER.
What parts can replace 4316U?
There are 26 known substitutes for 4316U: 13B, BB43, 4316M and 23 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 4316U?
4316U is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-954-3934. 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