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Technical Data Sheet
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3590FH4 — Technical Data Sheet

✓ Verified by PartsTable
— · BOLT SCREW
WHAT YOU NEED TO KNOW
Grade/class stamped on head determines strength Metric and imperial threads look similar — measure pitch
Verify thread pitch — metric != imperial
PRODUCT OVERVIEW

The RECEPTACLE,TURNLOCK FASTENER is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 6061 OVERALL, mounting_style: PLAIN W/MOUNTING HOLE, receptacle_width: 0.276 INCHES MINIMUM AND 0.286 INCHES MAXIMUM IN, receptacle_height: 0.625 INCHES NOMINAL IN, surface_treatment: ALUMINUM OVERALL, receptacle_overall_length: 1.437 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System under NSN 5325-01-257-8675, 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
3590FH4
NSN: 5325-01-257-8675
FSC: 5325
CAGE: 72794 — SOUTHCO INC (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 6061 OVERALL
mounting_stylePLAIN W/MOUNTING HOLE
receptacle_width0.276 INCHES MINIMUM AND 0.286 INCHES MAXIMUM IN
receptacle_height0.625 INCHES NOMINAL IN
surface_treatmentALUMINUM OVERALL
receptacle_overall_length1.437 INCHES NOMINAL IN
turnlock_receptacle_styleRECEPTACLE
turnlock_mounting_hole_diameter0.128 INCHES NOMINAL IN
material_document_and_classificationQQ-A-200/8,T6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
surface_treatment_document_and_classificationMIL-C-83488,TY 2,CL 3 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
center_to_center_distance_between_mounting_holes0.373 INCHES MINIMUM AND 0.377 INCHES MAXIMUM IN
NSN5325-01-257-8675
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 3590FH4 · OEM ⚠ VERIFY BEFORE ORDERING Verify thread pitch before ordering — metric (M8×1.25) ≠ imperial (5/16-18). Wrong thread = wrong part. Grade/class stamped on bolt head determines tensile strength ✓ BROKER TIP Grade/class stamped on head determines tensile strength. Grade 8 > Grade 5 > Grade 2. Always confirm head marking matches specification requirement PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
RECEPTACLE OVERALL LENGTH: 1.437 INCHES NOMINAL IN
•
MOUNTING STYLE: PLAIN W/MOUNTING HOLE
•
TURNLOCK MOUNTING HOLE DIAMETER: 0.128 INCHES NOMINAL IN
•
RECEPTACLE WIDTH: 0.276 INCHES MINIMUM AND 0.286 INCHES MAXIMUM IN
•
CENTER TO CENTER DISTANCE BETWEEN MOUNTING HOLES: 0.373 INCHES MINIMUM AND 0.377 INCHES MAXIMUM IN
•
TURNLOCK RECEPTACLE STYLE: RECEPTACLE
•
RECEPTACLE HEIGHT: 0.625 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-200/8,T6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS
RECEPTACLE OVERALL LENGTH1.437 INCHES NOMINAL IN
MOUNTING STYLEPLAIN W/MOUNTING HOLE
TURNLOCK MOUNTING HOLE DIAMETER0.128 INCHES NOMINAL IN
RECEPTACLE WIDTH0.276 INCHES MINIMUM AND 0.286 INCHES MAXIMUM IN
CENTER TO CENTER DISTANCE BETWEEN MOUNTING HOLES0.373 INCHES MINIMUM AND 0.377 INCHES MAXIMUM IN
TURNLOCK RECEPTACLE STYLERECEPTACLE
RECEPTACLE HEIGHT0.625 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-200/8,T6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALALUMINUM ALLOY 6061 OVERALL
SURFACE TREATMENTALUMINUM OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
110-045-3InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
BACS22A56InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
992323-09InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
T8414InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
17821InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
7HA6701InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVEGOVERNMENT REGISTRY
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 3590FH4?
3590FH4 is a RECEPTACLE,TURNLOCK FASTENER.
What parts can replace 3590FH4?
There are 10 known substitutes for 3590FH4: 110-045-3, BACS22A56, 992323-09 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 3590FH4?
3590FH4 is cataloged in the Federal Logistics Information System under NSN 5325-01-257-8675. This indicates validated use in U.S. government and defense supply chains.
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Last verified: September 2026