PartsTable
Technical Data Sheet
G9981PC80 ✓ 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: 2.948 INCHES MINIMUM AND 2.978 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 5310-00-185-6460, 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
G9981PC80
NSN: 5310-00-185-6460
FSC: 5310
CAGE: 59180 — CIRCOR PUMPS NORTH AMERICA LLC (USA)
SPECIFICATIONS
nut_styleROUND
nut_diameter2.948 INCHES MINIMUM AND 2.978 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_depth0.125 INCHES NOMINAL IN
drive_point_width0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
nominal_thread_size2.157 INCHES IN
drive_point_quantity4
thread_pitch_diameters+2.1209 TO 2.1260 INCHES IN
thread_quantity_per_inch18
NSN5310-00-185-6460
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: G9981PC80 · 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 DEPTH: 0.125 INCHES NOMINAL IN
THREAD PITCH DIAMETERS: +2.1209 TO 2.1260 INCHES IN
THREAD QUANTITY PER INCH: 18
NOMINAL THREAD SIZE: 2.157 INCHES IN
THREAD SERIES: UNS
HARDNESS RATING: 66.0 ROCKWELL B MINIMUM AND 92.0 ROCKWELL B MAXIMUM
NUT STYLE: ROUND
NUT DIAMETER: 2.948 INCHES MINIMUM AND 2.978 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
DRIVE POINT DEPTH0.125 INCHES NOMINAL IN
THREAD PITCH DIAMETERS+2.1209 TO 2.1260 INCHES IN
THREAD QUANTITY PER INCH18
NOMINAL THREAD SIZE2.157 INCHES IN
THREAD SERIESUNS
HARDNESS RATING66.0 ROCKWELL B MINIMUM AND 92.0 ROCKWELL B MAXIMUM
NUT STYLEROUND
NUT DIAMETER2.948 INCHES MINIMUM AND 2.978 INCHES MAXIMUM IN
THREAD DIRECTIONRIGHT-HAND
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD ALL MATERIAL RESPONSES OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 23
77C708676Interchangeable
interchangeable cross-reference
interchangeable
125-017Interchangeable
interchangeable cross-reference
interchangeable
8077Interchangeable
interchangeable cross-reference
interchangeable
1.250-17Interchangeable
interchangeable cross-reference
interchangeable
1-250-1 1-161LInterchangeable
interchangeable cross-reference
interchangeable
1549704-7Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is G9981PC80?
G9981PC80 is a NUT,PLAIN,ROUND.
What parts can replace G9981PC80?
There are 23 known substitutes for G9981PC80: 77C708676, 125-017, 8077 and 20 more. Substitute compatibility should be verified for your specific system.
Is G9981PC80 still available?
G9981PC80 is currently cancelled.
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