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GR520M1 — RECEPTACLE,TURNLOCK FASTENER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

GR520M1: RECEPTACLE,TURNLOCK FASTENER.

The RECEPTACLE,TURNLOCK FASTENER is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, receptacle_width: 0.625 INCHES MAXIMUM IN, special_features: HOLE ON BOTH END; DIAMETER 0.098, receptacle_height: 0.625 INCHES MAXIMUM IN, surface_treatment: CADMIUM AND CHROMATE OVERALL, receptacle_overall_length: 1.135 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5325-00-529-1536, 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
GR520M1
NSN: 5325-00-529-1536
FSC: 5325 — Fastening Devices
CAGE: 97499 — BELL TEXTRON INC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
receptacle_width0.625 INCHES MAXIMUM IN
special_featuresHOLE ON BOTH END; DIAMETER 0.098
receptacle_height0.625 INCHES MAXIMUM IN
surface_treatmentCADMIUM AND CHROMATE OVERALL
receptacle_overall_length1.135 INCHES MAXIMUM IN
turnlock_receptacle_styleRECEPTACLE
surface_treatment_document_and_classificationQQ-P-416 TYPE2,CLASS2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
center_to_center_distance_between_mounting_holes0.873 INCHES NOMINAL IN
NSN5325-00-529-1536
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: GR520M1 · 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: 1.135 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416 TYPE2,CLASS2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
CENTER TO CENTER DISTANCE BETWEEN MOUNTING HOLES: 0.873 INCHES NOMINAL IN
•
TURNLOCK RECEPTACLE STYLE: RECEPTACLE
•
RECEPTACLE WIDTH: 0.625 INCHES MAXIMUM IN
•
SURFACE TREATMENT: CADMIUM AND CHROMATE OVERALL
•
RECEPTACLE HEIGHT: 0.625 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
RECEPTACLE OVERALL LENGTH1.135 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416 TYPE2,CLASS2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
CENTER TO CENTER DISTANCE BETWEEN MOUNTING HOLES0.873 INCHES NOMINAL IN
TURNLOCK RECEPTACLE STYLERECEPTACLE
RECEPTACLE WIDTH0.625 INCHES MAXIMUM IN
SPECIAL FEATURESHOLE ON BOTH END; DIAMETER 0.098
SURFACE TREATMENTCADMIUM AND CHROMATE OVERALL
RECEPTACLE HEIGHT0.625 INCHES MAXIMUM IN
MATERIALSTEEL OVERALL
SUBSTITUTES & CROSS-REFERENCES 1
V4-109Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is GR520M1?
GR520M1 is a RECEPTACLE,TURNLOCK FASTENER.
What parts can replace GR520M1?
There is 1 known substitute for GR520M1: V4-109. Substitute compatibility should be verified for your specific system.
What is the NSN for GR520M1?
GR520M1 is cataloged in the U.S. Government catalog under NSN 5325-00-529-1536. 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.