PartsTable
Technical Data Sheet
MILP21248 ✓ 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 RING,RETAINING is a the manufacturer industrial component. Key specifications include ring_style: INTERNAL, usage_design: INTERNAL, major_thickness: 0.090 INCHES MINIMUM AND 0.096 INCHES MAXIMUM IN, outside_diameter: 2.950 INCHES MINIMUM AND 3.020 INCHES MAXIMUM IN, surface_treatment: CADMIUM AND CHROMATE, casehardening_indicator: NOT CASEHARDENED. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-804-2778, 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
MILP21248
NSN: 5325-00-804-2778
FSC: 5325
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
ring_styleINTERNAL
usage_designINTERNAL
major_thickness0.090 INCHES MINIMUM AND 0.096 INCHES MAXIMUM IN
outside_diameter2.950 INCHES MINIMUM AND 3.020 INCHES MAXIMUM IN
surface_treatmentCADMIUM AND CHROMATE
casehardening_indicatorNOT CASEHARDENED
end_item_identificationMULTIPLE LAUNCH ROCKET SYSTEM (MLRS)
material_hardness_rating47.0 ROCKWELL C MINIMUM AND 52.0 ROCKWELL C MAXIMUM
cross-sectional_shape_styleRECTANGULAR
material_document_and_classificationFED STD 66 AISI 1066 OR 1069 OR 1070 OR 1072 OR 1074 OR 1075 OR 1078 OR 1080 OR 1084 OR 1086 OR 1090 FED STD SINGLE MATERIAL RESPONSE
NSN5325-00-804-2778
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: MILP21248 · 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
CASEHARDENING INDICATOR: NOT CASEHARDENED
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
MATERIAL: STEEL COMP 1066 OR STEEL COMP 1069 OR STEEL COMP 1070 OR STEEL COMP 1072 OR STEEL COMP 1074 OR STEEL COMP 1075 OR STEEL COMP 1078 OR STEEL COMP 1080 OR STEEL COMP 1084 OR STEEL COMP 1086 OR STEEL COMP 1090
USAGE DESIGN: INTERNAL
MATERIAL HARDNESS RATING: 47.0 ROCKWELL C MINIMUM AND 52.0 ROCKWELL C MAXIMUM
SURFACE TREATMENT: CADMIUM AND CHROMATE
MATERIAL DOCUMENT AND CLASSIFICATION: FED STD 66 AISI 1066 OR 1069 OR 1070 OR 1072 OR 1074 OR 1075 OR 1078 OR 1080 OR 1084 OR 1086 OR 1090 FED STD SINGLE MATERIAL RESPONSE
TECHNICAL CHARACTERISTICS (FLIS)
CASEHARDENING INDICATORNOT CASEHARDENED
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
MATERIALSTEEL COMP 1066 OR STEEL COMP 1069 OR STEEL COMP 1070 OR STEEL COMP 1072 OR STEEL COMP 1074 OR STEEL COMP 1075 OR STEEL COMP 1078 OR STEEL COMP 1080 OR STEEL COMP 1084 OR STEEL COMP 1086 OR STEEL COMP 1090
USAGE DESIGNINTERNAL
MATERIAL HARDNESS RATING47.0 ROCKWELL C MINIMUM AND 52.0 ROCKWELL C MAXIMUM
END ITEM IDENTIFICATIONMULTIPLE LAUNCH ROCKET SYSTEM (MLRS)
SURFACE TREATMENTCADMIUM AND CHROMATE
MATERIAL DOCUMENT AND CLASSIFICATIONFED STD 66 AISI 1066 OR 1069 OR 1070 OR 1072 OR 1074 OR 1075 OR 1078 OR 1080 OR 1084 OR 1086 OR 1090 FED STD SINGLE MATERIAL RESPONSE
MAJOR THICKNESS0.090 INCHES MINIMUM AND 0.096 INCHES MAXIMUM IN
RING STYLEINTERNAL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
273050Interchangeable
interchangeable cross-reference
interchangeable
4A-X406Interchangeable
interchangeable cross-reference
interchangeable
4A44FInterchangeable
interchangeable cross-reference
interchangeable
X268Interchangeable
interchangeable cross-reference
interchangeable
228-25-1Interchangeable
interchangeable cross-reference
interchangeable
50210Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MILP21248?
MILP21248 is a RING,RETAINING.
What parts can replace MILP21248?
There are 18 known substitutes for MILP21248: 273050, 4A-X406, 4A44F and 15 more. Substitute compatibility should be verified for your specific system.
Is MILP21248 still available?
MILP21248 is currently cancelled.
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