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TR24021 — INSERT,SCREW THREAD

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

TR24021: INSERT,SCREW THREAD.

The INSERT,SCREW THREAD is a the manufacturer industrial component. Key specifications include length: 0.620 INCHES NOMINAL IN, insert_size: 0.625-11 UNC 2A A, thread_class: 3B, style_designator: GROOVED KEYLOCK, features_provided: INDIVIDUALLY KEYED, nominal_thread_size: 0.375 INCHES IN. This part is cataloged in the U.S.

Government catalog under NSN 5325-01-020-7089, 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
TR24021
NSN: 5325-01-020-7089
FSC: 5325 — Fastening Devices
CAGE: 29372 — HOWMET GLOBAL FASTENING SYSTEMS INC. DIV TRIDAIR PRODUCTS (USA)
SPECIFICATIONS
length0.620 INCHES NOMINAL IN
insert_size0.625-11 UNC 2A A
thread_class3B
style_designatorGROOVED KEYLOCK
features_providedINDIVIDUALLY KEYED
nominal_thread_size0.375 INCHES IN
thread_quantity_per_inch24
thread_series_designatorUNIFIED NATIONAL JOINT FINE (UNJF)
full_internal_thread_length0.550 INCHES NOMINAL IN
internal_thread_relief_depth0.070 INCHES NOMINAL IN
part_name_assigned_by_controlling_agencyNAVY SPECIAL PROJECT
NSN5325-01-020-7089
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: TR24021 · 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
•
LENGTH: 0.620 INCHES NOMINAL IN
•
INSERT SIZE: 0.625-11 UNC 2A A
•
STYLE DESIGNATOR: GROOVED KEYLOCK
•
INTERNAL THREAD RELIEF DEPTH: 0.070 INCHES NOMINAL IN
•
FEATURES PROVIDED: INDIVIDUALLY KEYED
•
NOMINAL THREAD SIZE: 0.375 INCHES IN
•
FULL INTERNAL THREAD LENGTH: 0.550 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
LENGTH0.620 INCHES NOMINAL IN
INSERT SIZE0.625-11 UNC 2A A
STYLE DESIGNATORGROOVED KEYLOCK
INTERNAL THREAD RELIEF DEPTH0.070 INCHES NOMINAL IN
FEATURES PROVIDEDINDIVIDUALLY KEYED
NOMINAL THREAD SIZE0.375 INCHES IN
FULL INTERNAL THREAD LENGTH0.550 INCHES NOMINAL IN
PART NAME ASSIGNED BY CONTROLLING AGENCYNAVY SPECIAL PROJECT
THREAD CLASS3B
THREAD QUANTITY PER INCH24
SUBSTITUTES & CROSS-REFERENCES 1
935282-3Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is TR24021?
TR24021 is a INSERT,SCREW THREAD.
What parts can replace TR24021?
There is 1 known substitute for TR24021: 935282-3. Substitute compatibility should be verified for your specific system.
What is the NSN for TR24021?
TR24021 is cataloged in the U.S. Government catalog under NSN 5325-01-020-7089. This indicates validated use in U.S. government and defense supply chains.
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✓ 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.