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SS5103D16 — WASHER,RECESSED

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

SS5103D16: WASHER,RECESSED.

The WASHER,RECESSED is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 5052 OVERALL, recess_angle: 90.0 DEGREES NOMINAL, hole_diameter: 1.010 INCHES MINIMUM AND 1.025 INCHES MAXIMUM IN, recess_diameter: 1.140 INCHES MINIMUM AND 1.160 INCHES MAXIMUM IN, outside_diameter: 1.620 INCHES MINIMUM AND 1.640 INCHES MAXIMUM IN, style_designator: RECESSED. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-305-2591, 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
SS5103D16
NSN: 5310-01-305-2591
FSC: 5310 — Nuts and Washers
CAGE: 78286 — SIKORSKY AIRCRAFT CORPORATION DBA SIKORSKY AIRCRAFT CORP (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 5052 OVERALL
recess_angle90.0 DEGREES NOMINAL
hole_diameter1.010 INCHES MINIMUM AND 1.025 INCHES MAXIMUM IN
recess_diameter1.140 INCHES MINIMUM AND 1.160 INCHES MAXIMUM IN
outside_diameter1.620 INCHES MINIMUM AND 1.640 INCHES MAXIMUM IN
style_designatorRECESSED
surface_treatmentANODIZE OR CHROMATE OVERALL
material_thickness0.080 INCHES NOMINAL IN
material_document_and_classificationQQ-A-250/8,H34 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-250/8,H36 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-250/8,H38 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
surface_treatment_document_and_classificationMIL-A-8625 MIL SPEC 1ST TREATMENT RESPONSE OR MIL-C-5541 MIL SPEC 2ND TREATMENT RESPONSE OVERALL
NSN5310-01-305-2591
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: SS5103D16 · 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 TREATMENT DOCUMENT AND CLASSIFICATION: MIL-A-8625 MIL SPEC 1ST TREATMENT RESPONSE OR MIL-C-5541 MIL SPEC 2ND TREATMENT RESPONSE OVERALL
•
STYLE DESIGNATOR: RECESSED
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-250/8,H34 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-250/8,H36 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-250/8,H38 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 1.620 INCHES MINIMUM AND 1.640 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.080 INCHES NOMINAL IN
•
RECESS DIAMETER: 1.140 INCHES MINIMUM AND 1.160 INCHES MAXIMUM IN
•
SURFACE TREATMENT: ANODIZE OR CHROMATE OVERALL
•
MATERIAL: ALUMINUM ALLOY 5052 OVERALL
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-A-8625 MIL SPEC 1ST TREATMENT RESPONSE OR MIL-C-5541 MIL SPEC 2ND TREATMENT RESPONSE OVERALL
STYLE DESIGNATORRECESSED
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-250/8,H34 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-250/8,H36 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-250/8,H38 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER1.620 INCHES MINIMUM AND 1.640 INCHES MAXIMUM IN
MATERIAL THICKNESS0.080 INCHES NOMINAL IN
RECESS DIAMETER1.140 INCHES MINIMUM AND 1.160 INCHES MAXIMUM IN
SURFACE TREATMENTANODIZE OR CHROMATE OVERALL
MATERIALALUMINUM ALLOY 5052 OVERALL
HOLE DIAMETER1.010 INCHES MINIMUM AND 1.025 INCHES MAXIMUM IN
RECESS ANGLE90.0 DEGREES NOMINAL
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 SS5103D16?
SS5103D16 is a WASHER,RECESSED.
What is the NSN for SS5103D16?
SS5103D16 is cataloged in the U.S. Government catalog under NSN 5310-01-305-2591. 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.