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MS51937-5 — BOLT,EYE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

MS51937-5: BOLT,EYE.

The BOLT,EYE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, shank_length: 1.500 INCHES MINIMUM AND 1.620 INCHES MAXIMUM IN, thread_class: 2A A, thread_length: 1.120 INCHES NOMINAL IN, overall_length: 3.810 INCHES MINIMUM AND 4.190 INCHES MAXIMUM IN, special_features: CERTIFIED FREE FROM MERCURY CONTAMINATION. This part is cataloged in the U.S.

Government catalog under NSN 5306-00-050-0347, 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
MS51937-5
NSN: 5306-00-050-0347
NIINs: 000500347, 001859489, 011240504, 011980245
FSC: 5306 — Bolts
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialSTEEL OVERALL
shank_length1.500 INCHES MINIMUM AND 1.620 INCHES MAXIMUM IN
thread_class2A A
thread_length1.120 INCHES NOMINAL IN
overall_length3.810 INCHES MINIMUM AND 4.190 INCHES MAXIMUM IN
special_featuresCERTIFIED FREE FROM MERCURY CONTAMINATION
style_designatorROUND, CLOSED W/SHOULDER
thread_directionRIGHT-HAND
eye_outside_width2.120 INCHES NOMINAL IN
shoulder_diameter0.880 INCHES MINIMUM AND 0.940 INCHES MAXIMUM IN
surface_treatmentCHROMIUM OVERALL
eye_stock_diameter0.440 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
NSN5306-00-050-0347
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: MS51937-5 · 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
•
EYE STOCK DIAMETER: 0.440 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
•
THREAD LENGTH: 1.120 INCHES MINIMUM IN
•
SHANK LENGTH: 1.500 INCHES MINIMUM AND 1.620 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: ROUND, CLOSED W/SHOULDER
•
NOMINAL THREAD DIAMETER: 0.500 INCHES IN
•
THREAD DIRECTION: RIGHT-HAND
•
DISTANCE FROM CENTER OF EYE TO SHANK END: 3.250 INCHES MINIMUM AND 3.565 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
EYE STOCK DIAMETER0.440 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
THREAD LENGTH1.120 INCHES MINIMUM IN
SHANK LENGTH1.500 INCHES MINIMUM AND 1.620 INCHES MAXIMUM IN
STYLE DESIGNATORROUND, CLOSED W/SHOULDER
OVERALL LENGTH3.810 INCHES MINIMUM AND 4.190 INCHES MAXIMUM IN
NOMINAL THREAD DIAMETER0.500 INCHES IN
THREAD DIRECTIONRIGHT-HAND
DISTANCE FROM CENTER OF EYE TO SHANK END3.250 INCHES MINIMUM AND 3.565 INCHES MAXIMUM IN
SHOULDER DIAMETER0.880 INCHES MINIMUM AND 0.940 INCHES MAXIMUM IN
SHOULDER THICKNESS0.190 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
SUBSTITUTES & CROSS-REFERENCES 6
501644Reference document
Same NSN cross-reference
Reference document — Secondary reference
JCM-17388-4Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
MS51937B5Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
5306PL1493893Reference document
Same NSN cross-reference
Reference document — Informative reference only
5306000500347Reference document
Same NSN cross-reference
Reference document — Informative reference only
4592481 ITEM 21Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is MS51937-5?
MS51937-5 is a BOLT,EYE.
What parts can replace MS51937-5?
There are 6 known substitutes for MS51937-5: 501644, JCM-17388-4, MS51937B5 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MS51937-5?
MS51937-5 is cataloged in the U.S. Government catalog under NSN 5306-00-050-0347. This indicates validated use in U.S. government and defense supply chains.
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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.