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845-7286645 ITEM 18 — 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 SCREW,CAP,SOCKET HEAD is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY K-500 OVERALL, head_style: PAN NO. 2, head_height: 0.740 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN, thread_class: 3A A, head_diameter: 1.107 INCHES MINIMUM AND 1.125 INCHES MAXIMUM IN, thread_length: 2.000 INCHES NOMINAL IN.

This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System under NSN 5305-01-477-8764, 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
845-7286645 ITEM 18
NSN: 5305-01-477-8764
FSC: 5305
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialNICKEL ALLOY K-500 OVERALL
head_stylePAN NO. 2
head_height0.740 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
thread_class3A A
head_diameter1.107 INCHES MINIMUM AND 1.125 INCHES MAXIMUM IN
thread_length2.000 INCHES NOMINAL IN
fastener_length2.000 INCHES NOMINAL IN
hardness_rating24.0 ROCKWELL C MINIMUM FASTENER
locking_featurePATCH OR PELLET OR STRIP FASTENER
thread_directionRIGHT-HAND
width_across_flats0.625 INCHES NOMINAL IN
internal_drive_styleHEXAGON
NSN5305-01-477-8764
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 845-7286645 ITEM 18 · 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
•
HEAD DIAMETER: 1.107 INCHES MINIMUM AND 1.125 INCHES MAXIMUM IN
•
THREAD CLASS: 3A A
•
THREAD SERIES DESIGNATOR: UNRC
•
THREAD QUANTITY PER INCH: 10
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-N-286 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
INTERNAL DRIVE STYLE: HEXAGON
•
MINIMUM YIELD STRENGTH: 90000 POUNDS PER SQUARE INCH LBS
•
HARDNESS RATING: 24.0 ROCKWELL C MINIMUM FASTENER
TECHNICAL CHARACTERISTICS
HEAD DIAMETER1.107 INCHES MINIMUM AND 1.125 INCHES MAXIMUM IN
THREAD CLASS3A A
THREAD SERIES DESIGNATORUNRC
THREAD QUANTITY PER INCH10
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-N-286 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
INTERNAL DRIVE STYLEHEXAGON
MINIMUM YIELD STRENGTH90000 POUNDS PER SQUARE INCH LBS
HARDNESS RATING24.0 ROCKWELL C MINIMUM FASTENER
NOMINAL THREAD DIAMETER0.750 INCHES IN
LOCKING FEATUREPATCH OR PELLET OR STRIP FASTENER
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
MIL-DTL-1222TYIIGR500SLF-LKGL1InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
7383858-264382003-42InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
7550479-264382003-42InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
H547-0001-H5471905-094D4InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
68-13-6200DSSInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
7383858-H5471905-094InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVEGOVERNMENT REGISTRY
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 845-7286645 ITEM 18?
845-7286645 ITEM 18 is a SCREW,CAP,SOCKET HEAD.
What parts can replace 845-7286645 ITEM 18?
There are 9 known substitutes for 845-7286645 ITEM 18: MIL-DTL-1222TYIIGR500SLF-LKGL1, 7383858-264382003-42, 7550479-264382003-42 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 845-7286645 ITEM 18?
845-7286645 ITEM 18 is cataloged in the Federal Logistics Information System under NSN 5305-01-477-8764. This indicates validated use in U.S. government and defense supply chains.
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Last verified: October 2026