PartsTable
Technical Data Sheet
5217370 ✓ 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 1335 OVERALL, nut_style: ROUND, nut_diameter: 2.875 INCHES NOMINAL IN, thread_class: 3B, nut_thickness: 1.125 INCHES NOMINAL IN, thread_series: UNS. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-521-7370, 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
5217370
NSN: 5310-00-521-7370
FSC: 5310
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
materialSTEEL COMP 1335 OVERALL
nut_styleROUND
nut_diameter2.875 INCHES NOMINAL IN
thread_class3B
nut_thickness1.125 INCHES NOMINAL IN
thread_seriesUNS
hardness_rating27.0 ROCKWELL C MINIMUM AND 34.0 ROCKWELL C MAXIMUM
thread_directionRIGHT-HAND
drive_point_depth0.375 INCHES NOMINAL IN
drive_point_width0.312 INCHES NOMINAL IN
nominal_thread_size1.968 INCHES IN
drive_point_quantity6
NSN5310-00-521-7370
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 5217370 · 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: STEEL COMP 1335 OVERALL
NUT DIAMETER: 2.875 INCHES NOMINAL IN
THREAD CLASS: 3B
THREAD SERIES: UNS
THREAD QUANTITY PER INCH: 16
NOMINAL THREAD SIZE: 1.968 INCHES IN
HARDNESS RATING: 27.0 ROCKWELL C MINIMUM AND 34.0 ROCKWELL C MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-624 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL COMP 1335 OVERALL
NUT DIAMETER2.875 INCHES NOMINAL IN
THREAD CLASS3B
THREAD SERIESUNS
THREAD QUANTITY PER INCH16
NOMINAL THREAD SIZE1.968 INCHES IN
HARDNESS RATING27.0 ROCKWELL C MINIMUM AND 34.0 ROCKWELL C MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-624 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NUT THICKNESS1.125 INCHES NOMINAL IN
NUT STYLEROUND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
5454382Interchangeable
interchangeable cross-reference
interchangeable
MC9220Interchangeable
interchangeable cross-reference
interchangeable
E9220Interchangeable
interchangeable cross-reference
interchangeable
53607Interchangeable
interchangeable cross-reference
interchangeable
655-341/5JInterchangeable
interchangeable cross-reference
interchangeable
361JInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 5217370?
5217370 is a NUT,PLAIN,ROUND.
What parts can replace 5217370?
There are 6 known substitutes for 5217370: 5454382, MC9220, E9220 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 5217370?
5217370 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-521-7370. This indicates validated use in U.S. government and defense supply chains.
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