PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 3-160358-78
3-160358-78 ✓ Verified by PartsTable
— · NUT WASHER
WHAT YOU NEED TO KNOW
Match nut grade to bolt grade for full strength Lock nuts prevent loosening under vibration
Don't mix grades — weakens the joint
PRODUCT OVERVIEW

The NUT,PLAIN,ROUND is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1211 OR STEEL COMP 1212 OR STEEL COMP 1213 OVERALL, nut_style: ROUND, nut_diameter: 1.750 INCHES NOMINAL IN, thread_class: 3B, nut_thickness: 0.591 INCHES NOMINAL IN, thread_series: UNF. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-638-1124, 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
3-160358-78
NSN: 5310-00-638-1124
FSC: 5310
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialSTEEL COMP 1211 OR STEEL COMP 1212 OR STEEL COMP 1213 OVERALL
nut_styleROUND
nut_diameter1.750 INCHES NOMINAL IN
thread_class3B
nut_thickness0.591 INCHES NOMINAL IN
thread_seriesUNF
thread_directionRIGHT-HAND
drive_point_depth0.188 INCHES NOMINAL IN
drive_point_width0.250 INCHES NOMINAL IN
nominal_thread_size1.375 INCHES IN
drive_point_quantity4
thread_quantity_per_inch12
NSN5310-00-638-1124
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 3-160358-78 · OEM ⚠ VERIFY BEFORE ORDERING Grade matters for torque spec — don't mix grades. A Grade 5 nut on a Grade 8 bolt weakens the joint. Lock nuts, wing nuts, and castle nuts are NOT interchangeable with standard hex ✓ BROKER TIP Match nut to bolt thread class and material. Stainless bolt + zinc nut = galvanic corrosion. Always verify finish matches (plain, zinc, hot-dip galvanized) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-18411,CLASS 2 MIL SPEC ALL MATERIAL RESPONSES OVERALL
•
NOMINAL THREAD SIZE: 1.375 INCHES IN
•
THREAD QUANTITY PER INCH: 12
•
THREAD SERIES: UNF
•
DRIVE POINT DEPTH: 0.188 INCHES NOMINAL IN
•
THREAD CLASS: 3B
•
NUT THICKNESS: 0.591 INCHES NOMINAL IN
•
MATERIAL: STEEL COMP 1211 OR STEEL COMP 1212 OR STEEL COMP 1213 OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-18411,CLASS 2 MIL SPEC ALL MATERIAL RESPONSES OVERALL
NOMINAL THREAD SIZE1.375 INCHES IN
THREAD QUANTITY PER INCH12
THREAD SERIESUNF
DRIVE POINT DEPTH0.188 INCHES NOMINAL IN
THREAD CLASS3B
NUT THICKNESS0.591 INCHES NOMINAL IN
MATERIALSTEEL COMP 1211 OR STEEL COMP 1212 OR STEEL COMP 1213 OVERALL
DRIVE POINT WIDTH0.250 INCHES NOMINAL IN
DRIVE POINT QUANTITY4
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
441445PC17Interchangeable
interchangeable cross-reference
interchangeable
36A33Interchangeable
interchangeable cross-reference
interchangeable
2162-1Interchangeable
interchangeable cross-reference
interchangeable
3370Interchangeable
interchangeable cross-reference
interchangeable
CCT-10-0-00Interchangeable
interchangeable cross-reference
interchangeable
T1020A00Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
Ready to buy 3-160358-78?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 3-160358-78?
3-160358-78 is a NUT,PLAIN,ROUND.
What parts can replace 3-160358-78?
There are 12 known substitutes for 3-160358-78: 441445PC17, 36A33, 2162-1 and 9 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 3-160358-78?
3-160358-78 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-638-1124. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Comments (0)
No comments yet. Be the first to share what you know.
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 3-160358-78

✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026