PartsTable
Technical Data Sheet
3/4-10UNC-3B ✓ 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 3/4-10UNC-3B is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-246-0818, 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
3/4-10UNC-3B
NSN: 5310-01-246-0818
FSC: 5310
CAGE: 03950 — NAVAL INVENTORY CONTROL POINT MECHANICSBURG (USA)
SPECIFICATIONS
Part Number3/4-10UNC-3B
NSN5310-01-246-0818
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 3/4-10UNC-3B · 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 QUANTITY PER INCH: 13
BEARING SURFACE TYPE: FLAT OR WASHER FACED
NOMINAL THREAD SIZE: 0.750 INCHES IN
CRITICALITY CODE JUSTIFICATION: ZZZY
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
NUT HEIGHT: 0.617 INCHES MINIMUM AND 0.665 INCHES MAXIMUM IN
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS: MATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: ASTM A 153 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
THREAD QUANTITY PER INCH13
BEARING SURFACE TYPEFLAT OR WASHER FACED
NOMINAL THREAD SIZE0.750 INCHES IN
CRITICALITY CODE JUSTIFICATIONZZZY
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
NUT HEIGHT0.617 INCHES MINIMUM AND 0.665 INCHES MAXIMUM IN
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICSMATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONASTM A 153 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
THREAD CLASS3A A
NUT STYLEHEXAGON
VERIFIED SUBSTITUTES & CROSS-REFERENCES 23
MIL-S-1222G TY1Interchangeable
interchangeable cross-reference
interchangeable
3/4-10UNC-2AX2-1/2 LGInterchangeable
interchangeable cross-reference
interchangeable
501-4364087ITEM3Interchangeable
interchangeable cross-reference
interchangeable
216-4363288MT-F44Interchangeable
interchangeable cross-reference
interchangeable
1/2-13UNC-2BInterchangeable
interchangeable cross-reference
interchangeable
216-4363322 F34-6Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 3/4-10UNC-3B?
3/4-10UNC-3B is a 3/4-10UNC-3B.
What parts can replace 3/4-10UNC-3B?
There are 23 known substitutes for 3/4-10UNC-3B: MIL-S-1222G TY1, 3/4-10UNC-2AX2-1/2 LG, 501-4364087ITEM3 and 20 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 3/4-10UNC-3B?
3/4-10UNC-3B is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-246-0818. This indicates validated use in U.S. government and defense supply chains.
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