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401143 ✓ 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 phase: SINGLE INPUT, material: STEEL OVERALL, duty_cycle: CONTINUOUS, head_style: FLAT CHAMFER, head_height: 0.188 INCHES NOMINAL IN, specific_use: CERCOM EQUIP.. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-01-032-3166, 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
401143
NSN: 5305-01-032-3166
FSC: 5305
CAGE: 64959 — AMERICAN TELEPHONE AND TELEGRAPH CO (USA)
SPECIFICATIONS
phaseSINGLE INPUT
materialSTEEL OVERALL
duty_cycleCONTINUOUS
head_styleFLAT CHAMFER
head_height0.188 INCHES NOMINAL IN
specific_useCERCOM EQUIP.
thread_class2A A
head_diameter0.312 INCHES NOMINAL IN
thread_length0.125 INCHES NOMINAL IN
cooling_methodAMBIENT AIR
shoulder_shapeROUND FIRST SHOULDER
fastener_length0.375 INCHES NOMINAL IN
NSN5305-01-032-3166
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 401143 · 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
•
INTERNAL DRIVE STYLE: SLOT
•
NOMINAL THREAD DIAMETER: 0.138 INCHES IN
•
THREAD SERIES DESIGNATOR: UNF
•
MATERIAL: STEEL OVERALL
•
SHOULDER DIAMETER: 0.188 INCHES NOMINAL FIRST SHOULDER IN
•
THREAD QUANTITY PER INCH: 40
•
THREAD DIRECTION: RIGHT-HAND
•
FASTENER LENGTH: 0.375 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
INTERNAL DRIVE STYLESLOT
NOMINAL THREAD DIAMETER0.138 INCHES IN
THREAD SERIES DESIGNATORUNF
MATERIALSTEEL OVERALL
SHOULDER DIAMETER0.188 INCHES NOMINAL FIRST SHOULDER IN
THREAD QUANTITY PER INCH40
THREAD DIRECTIONRIGHT-HAND
FASTENER LENGTH0.375 INCHES NOMINAL IN
THREAD LENGTH0.125 INCHES NOMINAL IN
HEAD HEIGHT0.188 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 2
DIG-0801NInterchangeable
interchangeable cross-reference
interchangeable
401143Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 401143?
401143 is a SCREW,SHOULDER.
What parts can replace 401143?
There are 2 known substitutes for 401143: DIG-0801N, 401143. Substitute compatibility should be verified for your specific system.
What is the NSN for 401143?
401143 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-01-032-3166. 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