PartsTable
Technical Data Sheet
SP23B ✓ 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 CLUTCH ASSEMBLY,FRICTION is a the manufacturer industrial component. Key specifications include end_item_identification: A4 ACFT. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-240-7213, 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
SP23B
NSN: 5310-00-240-7213
FSC: 5310
CAGE: K4975 — UFC AEROSPACE EUROPE LIMITED (GBR)
SPECIFICATIONS
end_item_identificationA4 ACFT
NSN5310-00-240-7213
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: SP23B · 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
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: DTD.904,FSCM 10849 MFR REF SINGLE TREATMENT RESPONSE OVERALL
MATERIAL: STEEL OVERALL
OVERALL DIAMETER: 0.373 INCHES MINIMUM AND 0.378 INCHES MAXIMUM IN
HOLE DIAMETER: 0.152 INCHES MINIMUM AND 0.157 INCHES MAXIMUM IN
CENTER HOLE SHAPE STYLE: ROUND
THICKNESS: 0.040 INCHES NOMINAL IN
PERIPHERAL SHAPE STYLE: ROUND
SURFACE TREATMENT: CADMIUM OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONDTD.904,FSCM 10849 MFR REF SINGLE TREATMENT RESPONSE OVERALL
MATERIALSTEEL OVERALL
OVERALL DIAMETER0.373 INCHES MINIMUM AND 0.378 INCHES MAXIMUM IN
HOLE DIAMETER0.152 INCHES MINIMUM AND 0.157 INCHES MAXIMUM IN
CENTER HOLE SHAPE STYLEROUND
THICKNESS0.040 INCHES NOMINAL IN
PERIPHERAL SHAPE STYLEROUND
SURFACE TREATMENTCADMIUM OVERALL
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
1937904-1Interchangeable
interchangeable cross-reference
interchangeable
SP238Interchangeable
interchangeable cross-reference
interchangeable
D.S.R.153-2Interchangeable
Same NIIN cross-reference
interchangeable
30-298-142-04Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is SP23B?
SP23B is a CLUTCH ASSEMBLY,FRICTION.
What parts can replace SP23B?
There are 4 known substitutes for SP23B: 1937904-1, SP238, D.S.R.153-2 and 1 more. Substitute compatibility should be verified for your specific system.
Is SP23B still available?
SP23B is currently cancelled.
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