PartsTable
Technical Data Sheet
Download PDF

GR540EL6R — RING,RETAINING

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

GR540EL6R: RING,RETAINING.

The RING,RETAINING is a the manufacturer industrial component. Key specifications include material: STEEL COMP 631, inside_diameter: 0.454 INCHES MINIMUM AND 0.460 INCHES MAXIMUM IN, major_thickness: 0.033 INCHES MINIMUM AND 0.037 INCHES MAXIMUM IN, outside_diameter: 0.545 INCHES MINIMUM AND 0.551 INCHES MAXIMUM IN, special_features: FOR USE WITH GS553BU CAPTIVE SCREW, surface_treatment: PASSIVATE. This part is cataloged in the U.S.

Government catalog under NSN 5325-01-490-4448, 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
GR540EL6R
NSN: 5325-01-490-4448
FSC: 5325 — Fastening Devices
CAGE: 26512 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)
SPECIFICATIONS
materialSTEEL COMP 631
inside_diameter0.454 INCHES MINIMUM AND 0.460 INCHES MAXIMUM IN
major_thickness0.033 INCHES MINIMUM AND 0.037 INCHES MAXIMUM IN
outside_diameter0.545 INCHES MINIMUM AND 0.551 INCHES MAXIMUM IN
special_featuresFOR USE WITH GS553BU CAPTIVE SCREW
surface_treatmentPASSIVATE
end_item_identificationJOINT STARES PSE
cross-sectional_shape_styleRECTANGULAR
material_document_and_classificationAMS 5528 ASSN STD SINGLE MATERIAL RESPONSE
NSN5325-01-490-4448
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: GR540EL6R · 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
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5528 ASSN STD SINGLE MATERIAL RESPONSE
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
OUTSIDE DIAMETER: 0.545 INCHES MINIMUM AND 0.551 INCHES MAXIMUM IN
•
MAJOR THICKNESS: 0.033 INCHES MINIMUM AND 0.037 INCHES MAXIMUM IN
•
INSIDE DIAMETER: 0.454 INCHES MINIMUM AND 0.460 INCHES MAXIMUM IN
•
SURFACE TREATMENT: PASSIVATE
TECHNICAL CHARACTERISTICS
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5528 ASSN STD SINGLE MATERIAL RESPONSE
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
OUTSIDE DIAMETER0.545 INCHES MINIMUM AND 0.551 INCHES MAXIMUM IN
MAJOR THICKNESS0.033 INCHES MINIMUM AND 0.037 INCHES MAXIMUM IN
INSIDE DIAMETER0.454 INCHES MINIMUM AND 0.460 INCHES MAXIMUM IN
SPECIAL FEATURESFOR USE WITH GS553BU CAPTIVE SCREW
SURFACE TREATMENTPASSIVATE
END ITEM IDENTIFICATIONJOINT STARES PSE
MATERIALSTEEL COMP 631
OTHER ITEMS IN FSC 5325 — Fastening Devices
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5325-00-000-1884 5325-00-000-9988 5325-00-001-1567 5325-00-001-2043 5325-00-001-3842 5325-00-001-3858 5325-00-001-3871 5325-00-001-4317
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
Ready to buy GR540EL6R?
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 GR540EL6R?
GR540EL6R is a RING,RETAINING.
What is the NSN for GR540EL6R?
GR540EL6R is cataloged in the U.S. Government catalog under NSN 5325-01-490-4448. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — GR540EL6R

✓ 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.