PartsTable
Technical Data Sheet
PartsTable / COMPONENT / GR521A12C

GR521A12C — 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 mounting_style: PLAIN W/MOUNTING HOLE, receptacle_width: 0.480 INCHES MINIMUM AND 0.520 INCHES MAXIMUM IN, special_features: COLOR IS RED. MATERIAL IS STAINLESS STEEL., receptacle_height: 0.480 INCHES MINIMUM AND 0.520 INCHES MAXIMUM IN, receptacle_overall_length: 0.980 INCHES MINIMUM AND 1.020 INCHES MAXIMUM IN, turnlock_receptacle_style: RECEPTACLE.

This part is cataloged in the Federal Logistics Information System under NSN 5325-00-638-8088, 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
GR521A12C
NSN: 5325-00-638-8088
FSC: 5325
CAGE: 26512 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)
SPECIFICATIONS
mounting_stylePLAIN W/MOUNTING HOLE
receptacle_width0.480 INCHES MINIMUM AND 0.520 INCHES MAXIMUM IN
special_featuresCOLOR IS RED. MATERIAL IS STAINLESS STEEL.
receptacle_height0.480 INCHES MINIMUM AND 0.520 INCHES MAXIMUM IN
receptacle_overall_length0.980 INCHES MINIMUM AND 1.020 INCHES MAXIMUM IN
turnlock_receptacle_styleRECEPTACLE
turnlock_mounting_hole_diameter0.096 INCHES MINIMUM AND 0.102 INCHES MAXIMUM IN
center_to_center_distance_between_mounting_holes0.747 INCHES MINIMUM AND 0.753 INCHES MAXIMUM IN
NSN5325-00-638-8088
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: GR521A12C · 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 WIDTH: 0.480 INCHES MINIMUM AND 0.520 INCHES MAXIMUM IN
•
TURNLOCK MOUNTING HOLE DIAMETER: 0.096 INCHES MINIMUM AND 0.102 INCHES MAXIMUM IN
•
RECEPTACLE OVERALL LENGTH: 0.980 INCHES MINIMUM AND 1.020 INCHES MAXIMUM IN
•
MOUNTING STYLE: PLAIN W/MOUNTING HOLE
•
TURNLOCK RECEPTACLE STYLE: RECEPTACLE
•
CENTER TO CENTER DISTANCE BETWEEN MOUNTING HOLES: 0.747 INCHES MINIMUM AND 0.753 INCHES MAXIMUM IN
•
RECEPTACLE HEIGHT: 0.480 INCHES MINIMUM AND 0.520 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
RECEPTACLE WIDTH0.480 INCHES MINIMUM AND 0.520 INCHES MAXIMUM IN
TURNLOCK MOUNTING HOLE DIAMETER0.096 INCHES MINIMUM AND 0.102 INCHES MAXIMUM IN
RECEPTACLE OVERALL LENGTH0.980 INCHES MINIMUM AND 1.020 INCHES MAXIMUM IN
SPECIAL FEATURESCOLOR IS RED. MATERIAL IS STAINLESS STEEL.
MOUNTING STYLEPLAIN W/MOUNTING HOLE
TURNLOCK RECEPTACLE STYLERECEPTACLE
CENTER TO CENTER DISTANCE BETWEEN MOUNTING HOLES0.747 INCHES MINIMUM AND 0.753 INCHES MAXIMUM IN
RECEPTACLE HEIGHT0.480 INCHES MINIMUM AND 0.520 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 26
A242ARDInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
54B6811H16InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
212-12SDInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
212120InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
2121200InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
0212120InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLEDGOVERNMENT REGISTRY
Availability—
RoHS CompliantEAR99Not HAZMAT
Ready to buy GR521A12C?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is GR521A12C?
GR521A12C is a RECEPTACLE,TURNLOCK FASTENER.
What parts can replace GR521A12C?
There are 26 known substitutes for GR521A12C: A242ARD, 54B6811H16, 212-12SD and 23 more. Substitute compatibility should be verified for your specific system.
Is GR521A12C still available?
GR521A12C is currently cancelled.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — GR521A12C

✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: September 2026