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Technical Data Sheet
PartsTable / COMPONENT / BS1378PC6
BS1378PC6 ✓ 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,CAP is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, nut_style: CAP, nut_height: 1.188 INCHES NOMINAL IN, thread_class: 2B, thread_series: UNF, thread_direction: RIGHT-HAND. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-216-8024, 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
BS1378PC6
NSN: 5310-00-216-8024
FSC: 5310
CAGE: 63857 — CIRCOR NAVAL SOLUTIONS LLC DBA WARREN PUMPS (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
nut_styleCAP
nut_height1.188 INCHES NOMINAL IN
thread_class2B
thread_seriesUNF
thread_directionRIGHT-HAND
width_across_flats1.250 INCHES NOMINAL IN
nominal_thread_size0.500 INCHES IN
bearing_surface_typeCHAMFERED OR WASHER FACED
thread_quantity_per_inch20
NSN5310-00-216-8024
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: BS1378PC6 · 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
•
BEARING SURFACE TYPE: CHAMFERED OR WASHER FACED
•
NOMINAL THREAD SIZE: 0.500 INCHES IN
•
THREAD SERIES: UNF
•
THREAD QUANTITY PER INCH: 20
•
THREAD CLASS: 2B
•
WIDTH ACROSS FLATS: 1.250 INCHES NOMINAL IN
•
NUT STYLE: CAP
•
NUT HEIGHT: 1.188 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
BEARING SURFACE TYPECHAMFERED OR WASHER FACED
NOMINAL THREAD SIZE0.500 INCHES IN
THREAD SERIESUNF
THREAD QUANTITY PER INCH20
THREAD CLASS2B
WIDTH ACROSS FLATS1.250 INCHES NOMINAL IN
NUT STYLECAP
NUT HEIGHT1.188 INCHES NOMINAL IN
MATERIALCOPPER ALLOY OVERALL
THREAD DIRECTIONRIGHT-HAND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
G30Interchangeable
interchangeable cross-reference
interchangeable
MIL-R-5049Interchangeable
interchangeable cross-reference
interchangeable
MIL-S-5049Interchangeable
interchangeable cross-reference
interchangeable
94201Interchangeable
interchangeable cross-reference
interchangeable
31140Interchangeable
interchangeable cross-reference
interchangeable
43672Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is BS1378PC6?
BS1378PC6 is a NUT,PLAIN,CAP.
What parts can replace BS1378PC6?
There are 11 known substitutes for BS1378PC6: G30, MIL-R-5049, MIL-S-5049 and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for BS1378PC6?
BS1378PC6 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-216-8024. 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