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180789-1 — WASHER,SHOULDERED

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

180789-1: WASHER,SHOULDERED.

The WASHER,SHOULDERED is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, hole_diameter: 0.805 INCHES MINIMUM AND 0.806 INCHES MAXIMUM IN, surface_finish: 32.0 MICROINCHES BOTTOM, shoulder_height: 0.040 INCHES NOMINAL IN, outside_diameter: 1.100 INCHES NOMINAL IN, style_designator: SHOULDERED. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-173-2882, 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
180789-1
NSN: 5310-00-173-2882
FSC: 5310 — Nuts and Washers
CAGE: 71791 — CURTISS-WRIGHT CONTROLS, INC. DBA CURTISS WRIGHT DIV ACTUATION DIVISION (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
hole_diameter0.805 INCHES MINIMUM AND 0.806 INCHES MAXIMUM IN
surface_finish32.0 MICROINCHES BOTTOM
shoulder_height0.040 INCHES NOMINAL IN
outside_diameter1.100 INCHES NOMINAL IN
style_designatorSHOULDERED
shoulder_diameter0.980 INCHES NOMINAL IN
material_thickness0.040 INCHES MINIMUM AND 0.045 INCHES MAXIMUM IN
material_document_and_classificationQQ-B-750,COMP A,SPRING FED SPEC SINGLE MATERIAL RESPONSE OVERALL
part_name_assigned_by_controlling_agencyNAVY SPECIAL PROJECT
NSN5310-00-173-2882
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 180789-1 · 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
•
SURFACE FINISH: 32.0 MICROINCHES BOTTOM
•
SHOULDER HEIGHT: 0.040 INCHES NOMINAL IN
•
STYLE DESIGNATOR: SHOULDERED
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-B-750,COMP A,SPRING FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 1.100 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.040 INCHES MINIMUM AND 0.045 INCHES MAXIMUM IN
•
SHOULDER DIAMETER: 0.980 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
SURFACE FINISH32.0 MICROINCHES BOTTOM
SURFACE FINISH32.0 MICROINCHES TOP
SHOULDER HEIGHT0.040 INCHES NOMINAL IN
STYLE DESIGNATORSHOULDERED
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-B-750,COMP A,SPRING FED SPEC SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER1.100 INCHES NOMINAL IN
MATERIAL THICKNESS0.040 INCHES MINIMUM AND 0.045 INCHES MAXIMUM IN
SHOULDER DIAMETER0.980 INCHES NOMINAL IN
PART NAME ASSIGNED BY CONTROLLING AGENCYNAVY SPECIAL PROJECT
MATERIALCOPPER ALLOY 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 180789-1?
180789-1 is a WASHER,SHOULDERED.
What is the NSN for 180789-1?
180789-1 is cataloged in the U.S. Government catalog under NSN 5310-00-173-2882. 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.