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PartsTable / COMPONENT / 187886
187886 ✓ 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

PANEL,PROTECTION,ELECTRICAL SYST. Key specifications include material: STEEL COMP 1005 OVERALL, nut_style: ROUND, nut_diameter: 6.125 INCHES NOMINAL IN, nut_thickness: 0.8125 INCHES NOMINAL IN, thread_series: UNS, hardness_rating: 66.0 ROCKWELL B MINIMUM AND 92.0 ROCKWELL B MAXIMUM. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-185-6340, 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
187886
NSN: 5310-00-185-6340
FSC: 5310
CAGE: 24617 — GENERAL MOTORS CORP (USA)
SPECIFICATIONS
materialSTEEL COMP 1005 OVERALL
nut_styleROUND
nut_diameter6.125 INCHES NOMINAL IN
nut_thickness0.8125 INCHES NOMINAL IN
thread_seriesUNS
hardness_rating66.0 ROCKWELL B MINIMUM AND 92.0 ROCKWELL B MAXIMUM
thread_directionRIGHT-HAND
drive_point_depth0.1875 INCHES NOMINAL IN
drive_point_width0.500 INCHES NOMINAL IN
nominal_thread_size4.716 INCHES IN
drive_point_quantity4
thread_pitch_diameters+4.6619 TO 4.6702 INCHES IN
NSN5310-00-185-6340
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 187886 · 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
•
THREAD PITCH DIAMETERS: +4.6619 TO 4.6702 INCHES IN
•
HARDNESS RATING: 66.0 ROCKWELL B MINIMUM AND 92.0 ROCKWELL B MAXIMUM
•
THREAD SERIES: UNS
•
THREAD QUANTITY PER INCH: 12
•
NOMINAL THREAD SIZE: 4.716 INCHES IN
•
THREAD DIRECTION: RIGHT-HAND
•
NUT DIAMETER: 6.125 INCHES NOMINAL IN
•
NUT THICKNESS: 0.8125 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
THREAD PITCH DIAMETERS+4.6619 TO 4.6702 INCHES IN
HARDNESS RATING66.0 ROCKWELL B MINIMUM AND 92.0 ROCKWELL B MAXIMUM
THREAD SERIESUNS
THREAD QUANTITY PER INCH12
NOMINAL THREAD SIZE4.716 INCHES IN
THREAD DIRECTIONRIGHT-HAND
NUT DIAMETER6.125 INCHES NOMINAL IN
NUT THICKNESS0.8125 INCHES NOMINAL IN
DRIVE POINT WIDTH0.500 INCHES NOMINAL IN
DRIVE POINT DEPTH0.1875 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
401047Interchangeable
interchangeable cross-reference
interchangeable
1396Interchangeable
interchangeable cross-reference
interchangeable
5710Interchangeable
interchangeable cross-reference
interchangeable
AN24Interchangeable
interchangeable cross-reference
interchangeable
24Interchangeable
interchangeable cross-reference
interchangeable
V1802NInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 187886?
187886 is a PANEL,PROTECTION,ELECTRICAL SYST.
What parts can replace 187886?
There are 18 known substitutes for 187886: 401047, 1396, 5710 and 15 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 187886?
187886 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-185-6340. 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