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Technical Data Sheet
PartsTable / COMPONENT / G7646PC31
G7646PC31 ✓ 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 nut_style: ROUND, nut_diameter: 2.668 INCHES MINIMUM AND 2.698 INCHES MAXIMUM IN, nut_thickness: 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN, thread_series: UNS, hardness_rating: 66.0 ROCKWELL B MINIMUM AND 92.0 ROCKWELL B MAXIMUM, thread_direction: RIGHT-HAND. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-185-6462, 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
G7646PC31
NSN: 5310-00-185-6462
FSC: 5310
CAGE: 16712 — SIEMENS ENERGY, INC. (USA)
SPECIFICATIONS
nut_styleROUND
nut_diameter2.668 INCHES MINIMUM AND 2.698 INCHES MAXIMUM IN
nut_thickness0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN
thread_seriesUNS
hardness_rating66.0 ROCKWELL B MINIMUM AND 92.0 ROCKWELL B MAXIMUM
thread_directionRIGHT-HAND
drive_point_depth0.094 INCHES NOMINAL IN
drive_point_width0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
nominal_thread_size1.967 INCHES IN
drive_point_quantity4
thread_pitch_diameters+1.9309 TO 1.9354 INCHES IN
thread_quantity_per_inch18
NSN5310-00-185-6462
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: G7646PC31 · 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
•
DRIVE POINT QUANTITY: 4
•
NOMINAL THREAD SIZE: 1.967 INCHES IN
•
THREAD QUANTITY PER INCH: 18
•
THREAD SERIES: UNS
•
HARDNESS RATING: 66.0 ROCKWELL B MINIMUM AND 92.0 ROCKWELL B MAXIMUM
•
NUT DIAMETER: 2.668 INCHES MINIMUM AND 2.698 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: 66 FED STD ALL MATERIAL RESPONSES OVERALL
•
NUT THICKNESS: 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
DRIVE POINT QUANTITY4
NOMINAL THREAD SIZE1.967 INCHES IN
THREAD QUANTITY PER INCH18
THREAD SERIESUNS
HARDNESS RATING66.0 ROCKWELL B MINIMUM AND 92.0 ROCKWELL B MAXIMUM
NUT DIAMETER2.668 INCHES MINIMUM AND 2.698 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD ALL MATERIAL RESPONSES OVERALL
NUT THICKNESS0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN
DRIVE POINT WIDTH0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
MATERIALSTEEL COMP 1015 OR STEEL COMP 1016 OR STEEL COMP 1017 OR STEEL COMP 1018 OR STEEL COMP 1019 OR STEEL COMP 1020 OR STEEL COMP 1021 OR STEEL COMP 1023 OR STEEL COMP 1524 OR STEEL COMP 1025 OR STEEL COMP 1026 OR STEEL COMP 1527 OR STEEL COMP 1030 OR STEEL COMP 1033 OR STEEL COMP 1034 OR STEEL COMP 1035 OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 28
253351Interchangeable
interchangeable cross-reference
interchangeable
60-90151AInterchangeable
interchangeable cross-reference
interchangeable
K854504-1Interchangeable
interchangeable cross-reference
interchangeable
N10Interchangeable
interchangeable cross-reference
interchangeable
6037Interchangeable
interchangeable cross-reference
interchangeable
4305002Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is G7646PC31?
G7646PC31 is a NUT,PLAIN,ROUND.
What parts can replace G7646PC31?
There are 28 known substitutes for G7646PC31: 253351, 60-90151A, K854504-1 and 25 more. Substitute compatibility should be verified for your specific system.
Is G7646PC31 still available?
G7646PC31 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026