Rationale:
MA3398 HAS BEEN REAFFIRMED TO COMPLY WITH THE SAE FIVE-YEAR REVIEW POLICY.
1
FOR PART NUMBERS WHICH ARE THREADED TO WITHIN ONE DIAMETER OF THE HEAD THE THREAD PD SHALL REPLACE DATUM B.
2
MATERIAL: CORROSION AND HEAT RESISTANT STEEL, AMS5731 (UNS S66266)
3
PROCUREMENT SPECIFICATION: MA 3374
4
HARDNESS: 26-35 HRC OR EQUIVALENT.
5
FLUORESCENT PENETRANT INSPECTION: AMS 2645. ACCEPTANCE CRITERIA PER MA3374.
6
SURFACE TEXTURE: SYMBOLS PER ANSI Y14.36-1978; REQUIREMENTS PER ANSI/ASME B46.1-1985. UNLESS OTHERWISE SPECIFIED SURFACES TO BE 3.2 MICROMETRES Ra.
7
PART NUMBER SHALL INCLUDE THE STANDARD NUMBER AND THE DASH NUMBER TO INDICATE DIAMETER AND LENGTH. EXAMPLE OF PART NUMBER:
MA3398-030014
=
BOLT, MJ3×0.5 THREAD, 14 LONG.
MA3398-200114
=
BOLT, MJ20×l.5 THREAD, 114 LONG.
8
MARK PART NUMBER AND MANUFACTURER'S IDENTIFICATION PER AS 478 CLASS A. FOR MJ3 AND MJ4 MARK ONLY MA3398 AND MANUFACTURER'S IDENTIFICATION.
9
BREAK EDGES 0.1-0.4, UNLESS OTHERWISE SPECIFIED.
10
DIMENSIONING AND TOLERANCING: ANSI Y14.5M-1982. TOLERANCE GRADE PER ANSI B4.2-1978.
11
ALL DIMENSIONS IN MILLIMETRES UNLESS OTHERWISE SPECIFIED.
12
DO NOT USE UNASSIGNED PART NUMBERS.
