PartsTable
Technical Data Sheet
10263-5 ✓ Verified by PartsTable
· MRO · MRO_GENERAL
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 RETAINER,CIRCUIT,CA is a the manufacturer industrial component. Key specifications include material: STEEL COMP 4340 OVERALL, nut_style: HEXAGON, body_style: PLAIN, SOLID, bore_style: INVOLUTE SPLINE BOTH ENDS, nut_height: 0.320 INCHES MINIMUM AND 0.337 INCHES MAXIMUM IN, tooth_form: STANDARD. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-010-2635, 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
MRO MRO_GENERAL 10263-5
NSN: 5310-00-010-2635
FSC: 5310
CAGE: 23705 — FRUEHAUF CORP (USA)
SPECIFICATIONS
materialSTEEL COMP 4340 OVERALL
nut_styleHEXAGON
body_stylePLAIN, SOLID
bore_styleINVOLUTE SPLINE BOTH ENDS
nut_height0.320 INCHES MINIMUM AND 0.337 INCHES MAXIMUM IN
tooth_formSTANDARD
thread_class2B
thread_seriesUNIFIED NATIONAL COARSE (UNC)
pitch_diameter0.9583 INCHES NOMINAL IN
pressure_angle20.0000 DEGREES
teeth_quantity23
hardness_rating95.0 ROCKWELL B MINIMUM AND 32.0 ROCKWELL C MAXIMUM
NSN5310-00-010-2635
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 10263-5 · 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
WIDTH ACROSS FLATS: 0.563 INCHES NOMINAL IN
BEARING SURFACE TYPE: CHAMFERED OR WASHER FACED
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
THREAD QUANTITY PER INCH: 16
NOMINAL THREAD SIZE: 0.375 INCHES IN
MATERIAL: STEEL OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-633-CANC FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NONDEFINITIVE SPEC/STD DATA: A TYPE
TECHNICAL CHARACTERISTICS (FLIS)
WIDTH ACROSS FLATS0.563 INCHES NOMINAL IN
BEARING SURFACE TYPECHAMFERED OR WASHER FACED
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
THREAD QUANTITY PER INCH16
NOMINAL THREAD SIZE0.375 INCHES IN
MATERIALSTEEL OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-633-CANC FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NONDEFINITIVE SPEC/STD DATAA TYPE
NUT HEIGHT0.328 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
102635Interchangeable
interchangeable cross-reference
interchangeable
SC762Interchangeable
interchangeable cross-reference
interchangeable
1C6175P22Interchangeable
interchangeable cross-reference
interchangeable
117062Interchangeable
interchangeable cross-reference
interchangeable
10386531Interchangeable
interchangeable cross-reference
interchangeable
35-1B2-5-3Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 10263-5?
10263-5 is a RETAINER,CIRCUIT,CA. It is classified as a MRO (MRO_GENERAL).
What parts can replace 10263-5?
There are 14 known substitutes for 10263-5: 102635, SC762, 1C6175P22 and 11 more. Substitute compatibility should be verified for your specific system.
Is 10263-5 still available?
10263-5 is currently cancelled.
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