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7-311310174 — WASHER,SHOULDERED

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

7-311310174: WASHER,SHOULDERED.

The WASHER,SHOULDERED is a the manufacturer industrial component. Key specifications include material: STEEL COMP E52100 OVERALL, hole_diameter: 2.3408 INCHES MINIMUM AND 2.3413 INCHES MAXIMUM IN, hardness_rating: 60.0 ROCKWELL C MINIMUM AND 64.0 ROCKWELL C MAXIMUM, outside_diameter: 3.380 INCHES NOMINAL IN, shoulder_diameter: 2.915 INCHES NOMINAL IN, surface_treatment: OXIDE OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-172-5194, 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
7-311310174
NSN: 5310-01-172-5194
FSC: 5310 — Nuts and Washers
CAGE: 8V613 — THE BOEING COMPANY (USA)
SPECIFICATIONS
materialSTEEL COMP E52100 OVERALL
hole_diameter2.3408 INCHES MINIMUM AND 2.3413 INCHES MAXIMUM IN
hardness_rating60.0 ROCKWELL C MINIMUM AND 64.0 ROCKWELL C MAXIMUM
outside_diameter3.380 INCHES NOMINAL IN
shoulder_diameter2.915 INCHES NOMINAL IN
surface_treatmentOXIDE OVERALL
material_document_and_classificationAMS 6444 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5310-01-172-5194
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 7-311310174 · 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
•
HARDNESS RATING: 60.0 ROCKWELL C MINIMUM AND 64.0 ROCKWELL C MAXIMUM
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 6444 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 3.380 INCHES NOMINAL IN
•
SHOULDER DIAMETER: 2.915 INCHES NOMINAL IN
•
SURFACE TREATMENT: OXIDE OVERALL
•
MATERIAL: STEEL COMP E52100 OVERALL
•
HOLE DIAMETER: 2.3408 INCHES MINIMUM AND 2.3413 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
HARDNESS RATING60.0 ROCKWELL C MINIMUM AND 64.0 ROCKWELL C MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 6444 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER3.380 INCHES NOMINAL IN
SHOULDER DIAMETER2.915 INCHES NOMINAL IN
SURFACE TREATMENTOXIDE OVERALL
MATERIALSTEEL COMP E52100 OVERALL
HOLE DIAMETER2.3408 INCHES MINIMUM AND 2.3413 INCHES MAXIMUM IN
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
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 7-311310174?
7-311310174 is a WASHER,SHOULDERED.
What is the NSN for 7-311310174?
7-311310174 is cataloged in the U.S. Government catalog under NSN 5310-01-172-5194. 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.