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SRS-28263 — NUT,PLAIN,CONE SEAT,HEXAGON

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

SRS-28263: NUT,PLAIN,CONE SEAT,HEXAGON.

The NUT,PLAIN,CONE SEAT,HEXAGON is a the manufacturer industrial component. Key specifications include material: STEEL COMP 303 OVERALL, nut_style: CONE SEAT, HEXAGON, nut_height: 0.750 INCHES NOMINAL IN, thread_class: 2B, thread_series: UN, cone_seat_angle: 30.00 DEGREES NOMINAL. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-013-7713, 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
SRS-28263
NSN: 5310-00-013-7713
FSC: 5310 — Nuts and Washers
CAGE: 14153 — DEFENSE LOGISTICS AGENCY DBA DEFENSE SUPPLY CENTER PHILADELPHIA (USA)
SPECIFICATIONS
materialSTEEL COMP 303 OVERALL
nut_styleCONE SEAT, HEXAGON
nut_height0.750 INCHES NOMINAL IN
thread_class2B
thread_seriesUN
cone_seat_angle30.00 DEGREES NOMINAL
thread_directionRIGHT-HAND
width_across_flats1.620 INCHES NOMINAL IN
nominal_thread_size1.250 INCHES IN
thread_quantity_per_inch12
material_document_and_classificationQQ-S-764 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-013-7713
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: SRS-28263 · 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: 1.620 INCHES NOMINAL IN
•
THREAD SERIES: UN
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-764 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 1.250 INCHES IN
•
CONE SEAT ANGLE: 30.00 DEGREES NOMINAL
•
NUT HEIGHT: 0.750 INCHES NOMINAL IN
•
NUT STYLE: CONE SEAT, HEXAGON
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS1.620 INCHES NOMINAL IN
THREAD SERIESUN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-764 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE1.250 INCHES IN
CONE SEAT ANGLE30.00 DEGREES NOMINAL
NUT HEIGHT0.750 INCHES NOMINAL IN
NUT STYLECONE SEAT, HEXAGON
THREAD CLASS2B
THREAD QUANTITY PER INCH12
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is SRS-28263?
SRS-28263 is a NUT,PLAIN,CONE SEAT,HEXAGON.
What is the NSN for SRS-28263?
SRS-28263 is cataloged in the U.S. Government catalog under NSN 5310-00-013-7713. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.