PartsTable
Technical Data Sheet
S249 ✓ 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 BRUSH,ELECTRICAL,SPECIAL is a the manufacturer industrial component. Key specifications include material: IRON CAST, bore_type: STRAIGHT, nut_style: HEXAGON, face_width: 0.750 INCHES NOMINAL IN, nut_height: 0.594 INCHES MINIMUM AND 0.656 INCHES MAXIMUM IN, bore_length: 0.719 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-354-5795, 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
S249
NSN: 5310-00-354-5795
FSC: 5310
CAGE: 25729 — GRACE W E MFG CO (USA)
SPECIFICATIONS
materialIRON CAST
quantity1
bore_typeSTRAIGHT
nut_styleHEXAGON
face_width0.750 INCHES NOMINAL IN
nut_height0.594 INCHES MINIMUM AND 0.656 INCHES MAXIMUM IN
bore_length0.719 INCHES NOMINAL IN
design_formWEBBED
tooth_pitch0.375 INCHES NOMINAL IN
keyway_width0.156 INCHES NOMINAL IN
thread_class2B
bore_diameter1.000 INCHES NOMINAL IN
NSN5310-00-354-5795
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: S249 · 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 CLASS: 2B
THREAD QUANTITY PER INCH: 20
THREAD SERIES: UNF
CONE SEAT ANGLE: 59.50 DEGREES MINIMUM AND 60.50 DEGREES MAXIMUM
NOMINAL THREAD SIZE: 0.500 INCHES IN
SURFACE TREATMENT: CADMIUM OR ZINC OVERALL
NUT STYLE: CONE SEAT, HEXAGON
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
THREAD CLASS2B
THREAD QUANTITY PER INCH20
THREAD SERIESUNF
CONE SEAT ANGLE59.50 DEGREES MINIMUM AND 60.50 DEGREES MAXIMUM
NOMINAL THREAD SIZE0.500 INCHES IN
SURFACE TREATMENTCADMIUM OR ZINC OVERALL
NUT STYLECONE SEAT, HEXAGON
MATERIALSTEEL OVERALL
LOCKING FEATUREFREE-RUNNING ALL METAL DESIGN
WIDTH ACROSS FLATS0.781 INCHES MINIMUM AND 0.844 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
DE17-23Interchangeable
interchangeable cross-reference
interchangeable
3638Interchangeable
interchangeable cross-reference
interchangeable
0-0569-4-8Interchangeable
interchangeable cross-reference
interchangeable
116872-001Interchangeable
interchangeable cross-reference
interchangeable
0360-0017Interchangeable
interchangeable cross-reference
interchangeable
TL465UInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is S249?
S249 is a BRUSH,ELECTRICAL,SPECIAL.
What parts can replace S249?
There are 18 known substitutes for S249: DE17-23, 3638, 0-0569-4-8 and 15 more. Substitute compatibility should be verified for your specific system.
What is the NSN for S249?
S249 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-354-5795. This indicates validated use in U.S. government and defense supply chains.
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