PartsTable
Technical Data Sheet
Download PDF

P503 — CONNECTOR,RECEPTACLE,ELECTRICAL

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

P503: CONNECTOR,RECEPTACLE,ELECTRICAL.

CONNECTOR,RECEPTACLE,ELECTRICAL. Key specifications include material: OIL LUBRICATING LUBRICATION, body_style: RECTANGULAR SHAPE, body_width: 7.9 MILLIMETERS NOMINAL MM, corner_shape: SQUARE ALL CORNERS, nominal_size: 0.125 INCHES FRONT END IN, overall_width: 0.810 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 3120-00-784-1269, 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
P503
NSN: 3120-00-784-1269
NIINs: 007841269, 009961997, 012869658
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 60960 — BUNTING BEARINGS CORP KALAMAZOO PLANT (USA)
SPECIFICATIONS
materialOIL LUBRICATING LUBRICATION
body_styleRECTANGULAR SHAPE
body_width7.9 MILLIMETERS NOMINAL MM
corner_shapeSQUARE ALL CORNERS
nominal_size0.125 INCHES FRONT END IN
overall_width0.810 INCHES NOMINAL IN
terminal_typePIN SINGLE MATING END ALL CONTACT GROUPINGS
bushing_length0.250 INCHES NOMINAL IN
overall_height30.5 MILLIMETERS NOMINAL MM
overall_length16.7 MILLIMETERS NOMINAL MM
hardness_rating30.0 ROCKWELL C MINIMUM AND 70.0 ROCKWELL C MAXIMUM OVERALL
insert_materialPLASTIC PHENOLIC SINGLE MATING END
NSN3120-00-784-1269
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: P503 · OEM ⚠ VERIFY BEFORE ORDERING ABEC grade: higher = tighter tolerance = higher cost. ABEC-1 is standard, ABEC-7+ for precision spindles. Open, shielded (ZZ), and sealed (2RS) versions have different max RPM ratings ✓ BROKER TIP 2RS = sealed for life (no maintenance). ZZ = shielded, re-greaseable. Open = must lubricate on install. Common interchange: 6205-2RS = 6205-2RSR = 6205-DDU (same bearing, different suffix) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
CORNER SHAPE: SQUARE ALL CORNERS
•
BODY OUTSIDE DIAMETER: 0.6270 INCHES MINIMUM AND 0.6280 INCHES MAXIMUM IN
•
HARDNESS RATING: 30.0 ROCKWELL C MINIMUM AND 70.0 ROCKWELL C MAXIMUM OVERALL
•
STYLE DESIGNATOR: SOLID, PLAIN, NO OUTSIDE FLANGES
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-L-15016 MIL SPEC SINGLE MATERIAL RESPONSE LUBRICATION
•
BODY INSIDE DIAMETER: 0.5010 INCHES MINIMUM AND 0.5020 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
CORNER SHAPESQUARE ALL CORNERS
BODY OUTSIDE DIAMETER0.6270 INCHES MINIMUM AND 0.6280 INCHES MAXIMUM IN
HARDNESS RATING30.0 ROCKWELL C MINIMUM AND 70.0 ROCKWELL C MAXIMUM OVERALL
STYLE DESIGNATORSOLID, PLAIN, NO OUTSIDE FLANGES
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-L-15016 MIL SPEC SINGLE MATERIAL RESPONSE LUBRICATION
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-B-5687,TY 1,COMP A OR B MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
OVERALL LENGTH0.3700 INCHES MINIMUM AND 0.3800 INCHES MAXIMUM IN
BODY INSIDE DIAMETER0.5010 INCHES MINIMUM AND 0.5020 INCHES MAXIMUM IN
MATERIALCOPPER ALLOY OVERALL
MATERIALOIL LUBRICATING LUBRICATION
SUBSTITUTES & CROSS-REFERENCES 8
B10-22Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
MS17795-70Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
MS17795Reference document
Same NSN cross-reference
Reference document — Identification reference
CS502BA0375Reference document
Same NSN cross-reference
Reference document — Secondary reference
EP 081006Reference document
Same NSN cross-reference
Reference document — Secondary reference
TCC4410 C PIECE 135Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
Ready to buy P503?
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 P503?
P503 is a CONNECTOR,RECEPTACLE,ELECTRICAL.
What parts can replace P503?
There are 8 known substitutes for P503: B10-22, MS17795-70, MS17795 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for P503?
P503 is cataloged in the U.S. Government catalog under NSN 3120-00-784-1269. 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 — P503

✓ 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.