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PartsTable / COMPONENT / MIL-S-1222 GR B16 TY4 7/8-9UNC-3
MIL-S-1222 GR B16 TY4 7/8-9UNC-3 ✓ 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 MIL-S-1222 GR B16 TY4 7/8-9UNC-3 is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5307-01-377-1802, 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
MIL-S-1222 GR B16 TY4 7/8-9UNC-3
NSN: 5307-01-377-1802
FSC: 5307
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
Part NumberMIL-S-1222 GR B16 TY4 7/8-9UNC-3
NSN5307-01-377-1802
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: MIL-S-1222 GR B16 TY4 7/8-9UNC-3 · 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
•
CRITICALITY CODE JUSTIFICATION: ZZZY
•
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS: MATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS
•
MATERIAL: STEEL
TECHNICAL CHARACTERISTICS (FLIS)
CRITICALITY CODE JUSTIFICATIONZZZY
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICSMATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS
END ITEM IDENTIFICATIONVALVE,LINEAR,DIRECT 1.50IPS
MATERIALSTEEL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
31156Interchangeable
interchangeable cross-reference
interchangeable
10-074614-002Interchangeable
interchangeable cross-reference
interchangeable
E2824PC53Interchangeable
interchangeable cross-reference
interchangeable
E2825PC53Interchangeable
interchangeable cross-reference
interchangeable
E2791PC51-53Interchangeable
interchangeable cross-reference
interchangeable
863959Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MIL-S-1222 GR B16 TY4 7/8-9UNC-3?
MIL-S-1222 GR B16 TY4 7/8-9UNC-3 is a MIL-S-1222 GR B16 TY4 7/8-9UNC-3.
What parts can replace MIL-S-1222 GR B16 TY4 7/8-9UNC-3?
There are 18 known substitutes for MIL-S-1222 GR B16 TY4 7/8-9UNC-3: 31156, 10-074614-002, E2824PC53 and 15 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MIL-S-1222 GR B16 TY4 7/8-9UNC-3?
MIL-S-1222 GR B16 TY4 7/8-9UNC-3 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5307-01-377-1802. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026