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121-50702-1 — NUT,PLAIN,EXTENDED WASHER,HEXAGO

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

121-50702-1: NUT,PLAIN,EXTENDED WASHER,HEXAGO.

NUT,PLAIN,EXTENDED WASHER,HEXAGO. Key specifications include material: ALUMINUM ALLOY 7075 OVERALL, nut_style: HEXAGON, thread_class: 2B, thread_series: UN, overall_height: 0.650 INCHES NOMINAL IN, thread_direction: RIGHT-HAND. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-207-6983, 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
121-50702-1
NSN: 5310-01-207-6983
FSC: 5310 — Nuts and Washers
CAGE: 04614 — TEXTRON SYSTEMS CORPORATION DBA TEXTRON SYSTEMS CORP (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 7075 OVERALL
nut_styleHEXAGON
thread_class2B
thread_seriesUN
overall_height0.650 INCHES NOMINAL IN
thread_directionRIGHT-HAND
washer_thickness0.120 INCHES NOMINAL IN
surface_treatmentANODIZE OVERALL
width_across_flats1.615 INCHES MINIMUM AND 1.627 INCHES MAXIMUM IN
nominal_thread_size1.3125 INCHES IN
washer_outside_diameter2.000 INCHES NOMINAL IN
thread_quantity_per_inch12
NSN5310-01-207-6983
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 121-50702-1 · 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
•
WASHER OUTSIDE DIAMETER: 2.000 INCHES NOMINAL IN
•
WIDTH ACROSS FLATS: 1.615 INCHES MINIMUM AND 1.627 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-A-8625,TYPE 3,CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
•
THREAD SERIES: UN
•
WASHER THICKNESS: 0.120 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-225/9,T7351 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.650 INCHES NOMINAL IN
WASHER OUTSIDE DIAMETER2.000 INCHES NOMINAL IN
WIDTH ACROSS FLATS1.615 INCHES MINIMUM AND 1.627 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-A-8625,TYPE 3,CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD SERIESUN
WASHER THICKNESS0.120 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-225/9,T7351 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE1.3125 INCHES IN
SURFACE TREATMENTANODIZE OVERALL
OTHER ITEMS IN FSC 5310 — Nuts and Washers
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5310-00-000-0040 5310-00-000-0077 5310-00-000-0079 5310-00-000-1146 5310-00-000-3815 5310-00-000-4532 5310-00-000-4540
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 121-50702-1?
121-50702-1 is a NUT,PLAIN,EXTENDED WASHER,HEXAGO.
What is the NSN for 121-50702-1?
121-50702-1 is cataloged in the U.S. Government catalog under NSN 5310-01-207-6983. 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.