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407638 — WASHER,RECESSED

✓ Government record, cited
Ricoh · NUT WASHER
PRODUCT OVERVIEW

407638: WASHER,RECESSED.

The WASHER,RECESSED is a Ricoh industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, recess_depth: 0.131 INCHES NOMINAL IN, hole_diameter: 1.250 INCHES NOMINAL IN, overall_height: 0.156 INCHES NOMINAL IN, outside_diameter: 1.725 INCHES NOMINAL IN, special_features: CHAMFERED ENDS,0.060 IN. LG X 45 DEG IN.

This part is cataloged in the U.S. Government catalog under NSN 5310-01-044-2896, 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
407638
NSN: 5310-01-044-2896
FSC: 5310 — Nuts and Washers
CAGE: 62983 — EATON AEROSPACE, LLC DBA JACKSON SOUTH (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
recess_depth0.131 INCHES NOMINAL IN
hole_diameter1.250 INCHES NOMINAL IN
overall_height0.156 INCHES NOMINAL IN
outside_diameter1.725 INCHES NOMINAL IN
special_featuresCHAMFERED ENDS,0.060 IN. LG X 45 DEG IN
style_designatorRECESSED
surface_treatmentPASSIVATE OVERALL
material_thickness0.092 INCHES NOMINAL IN
material_document_and_classificationVS1-1-8-3,FSCM 62983 MFR REF SINGLE MATERIAL RESPONSE OVERALL
surface_treatment_document_and_classificationVS1-3-1-15,FSCM 62983 MFR REF SINGLE TREATMENT RESPONSE OVERALL
NSN5310-01-044-2896
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 407638 · Ricoh ⚠ 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 TREATMENT DOCUMENT AND CLASSIFICATION: VS1-3-1-15,FSCM 62983 MFR REF SINGLE TREATMENT RESPONSE OVERALL
•
STYLE DESIGNATOR: RECESSED
•
MATERIAL DOCUMENT AND CLASSIFICATION: VS1-1-8-3,FSCM 62983 MFR REF SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 1.725 INCHES NOMINAL IN
•
RECESS DEPTH: 0.131 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.092 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.156 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONVS1-3-1-15,FSCM 62983 MFR REF SINGLE TREATMENT RESPONSE OVERALL
STYLE DESIGNATORRECESSED
MATERIAL DOCUMENT AND CLASSIFICATIONVS1-1-8-3,FSCM 62983 MFR REF SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER1.725 INCHES NOMINAL IN
RECESS DEPTH0.131 INCHES NOMINAL IN
MATERIAL THICKNESS0.092 INCHES NOMINAL IN
SPECIAL FEATURESCHAMFERED ENDS,0.060 IN. LG X 45 DEG IN
SURFACE TREATMENTPASSIVATE OVERALL
MATERIALSTEEL CORROSION RESISTING 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: Terminal item — no further procurement; issued until stock is exhaustedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 407638?
407638 is a WASHER,RECESSED manufactured by Ricoh.
What is the NSN for 407638?
407638 is cataloged in the U.S. Government catalog under NSN 5310-01-044-2896. This indicates validated use in U.S. government and defense supply chains.
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