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758-042-001 — WASHER,KEY

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

758-042-001: WASHER,KEY.

The WASHER,KEY is a the manufacturer industrial component. Key specifications include material: STEEL COMP 304 OVERALL, hole_diameter: 0.375 INCHES MINIMUM AND 0.379 INCHES MAXIMUM IN, outside_diameter: 0.615 INCHES MINIMUM AND 0.635 INCHES MAXIMUM IN, surface_treatment: PASSIVATE OVERALL, material_thickness: 0.030 INCHES MINIMUM AND 0.034 INCHES MAXIMUM IN, external_prebent_key_width: 0.122 INCHES MINIMUM AND 0.128 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-070-9641, 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
758-042-001
NSN: 5310-01-070-9641
FSC: 5310 — Nuts and Washers
CAGE: 26055 — PARKER-HANNIFIN CORPORATION DBA PNEUTRONICS DIV FLUID SYSTEMS DIVISION (USA)
SPECIFICATIONS
materialSTEEL COMP 304 OVERALL
hole_diameter0.375 INCHES MINIMUM AND 0.379 INCHES MAXIMUM IN
outside_diameter0.615 INCHES MINIMUM AND 0.635 INCHES MAXIMUM IN
surface_treatmentPASSIVATE OVERALL
material_thickness0.030 INCHES MINIMUM AND 0.034 INCHES MAXIMUM IN
external_prebent_key_width0.122 INCHES MINIMUM AND 0.128 INCHES MAXIMUM IN
external_prebent_key_length0.050 INCHES NOMINAL IN
internal_straight_key_width0.058 INCHES MINIMUM AND 0.062 INCHES MAXIMUM IN
overall_distance_including_keys0.683 INCHES MINIMUM AND 0.693 INCHES MAXIMUM IN
material_document_and_classificationMIL-S-5059,COND 1/4 HARD MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
surface_treatment_document_and_classificationQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
distance_from_centerline_to_top_of_internal_key0.154 INCHES MINIMUM AND 0.158 INCHES MAXIMUM IN
NSN5310-01-070-9641
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 758-042-001 · 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
•
INTERNAL STRAIGHT KEY WIDTH: 0.058 INCHES MINIMUM AND 0.062 INCHES MAXIMUM IN
•
DISTANCE FROM CENTERLINE TO TOP OF INTERNAL KEY: 0.154 INCHES MINIMUM AND 0.158 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
EXTERNAL PREBENT KEY LENGTH: 0.050 INCHES NOMINAL IN
•
OVERALL DISTANCE INCLUDING KEYS: 0.683 INCHES MINIMUM AND 0.693 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-5059,COND 1/4 HARD MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 0.615 INCHES MINIMUM AND 0.635 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.030 INCHES MINIMUM AND 0.034 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
INTERNAL STRAIGHT KEY WIDTH0.058 INCHES MINIMUM AND 0.062 INCHES MAXIMUM IN
DISTANCE FROM CENTERLINE TO TOP OF INTERNAL KEY0.154 INCHES MINIMUM AND 0.158 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
EXTERNAL PREBENT KEY LENGTH0.050 INCHES NOMINAL IN
OVERALL DISTANCE INCLUDING KEYS0.683 INCHES MINIMUM AND 0.693 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-5059,COND 1/4 HARD MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER0.615 INCHES MINIMUM AND 0.635 INCHES MAXIMUM IN
MATERIAL THICKNESS0.030 INCHES MINIMUM AND 0.034 INCHES MAXIMUM IN
SURFACE TREATMENTPASSIVATE OVERALL
EXTERNAL PREBENT KEY WIDTH0.122 INCHES MINIMUM AND 0.128 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
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 758-042-001?
758-042-001 is a WASHER,KEY.
What is the NSN for 758-042-001?
758-042-001 is cataloged in the U.S. Government catalog under NSN 5310-01-070-9641. 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.