4
3
2
1
1.0 DIMENSIONAL CHARACTERISTICS
1.1 PRODUCT DIMENSIONS: MUST MEET ANSI B 18.3 (1960 SERIES) HEXAGON
SOCKET HEAD CAPSCREW DIMENSIONS.
1.2 THREAD DIMENSIONS: UNRF CLASS 2A - ANSI B1.1 ROLLED THREADS
1.3 MARKINGS/SYMBOLS: MANUFACTURER'S STANDARD HEAD MARKING
1.4 KNURLS: PRODUCT TO BE KNURLED WITH MANUFACTURER'S STANDARD
2.0 MATERIAL CHARACTERISTICS
B
B
2.1 MATERIAL: ALLOY, COLD WORKING QUALITY STEEL PER ASTM A 574, PARA 4
2.2 MATERIAL TREATMENT: HEAT TREATED, OIL QUENCHED AND TEMPERED
2.3 TENSILE STRENGTH:
2.3.1 180,000 PSI MINIMUM FOR DIA. ¼ THRU ½".
2.3.2 170,000 PSI MINIMUM DOR DIA. 5/8 THRU 1".
2.4 PROOF STRENGTH:
2.4.1 140,000 PSI MINIMUM FOR DIA. ¼ THRU ½".
2.4.2 135,000 PSI MINIMUM FOR DIA. 5/8 THRU 1".
5.000
2.5 CORE HARDNESS:
0.938
0.921
2.5.1 Rc 39-45 (MID-RADIUS) FOR ¼ THRU ½".
2.5.2 Rc 37-45 (MID-RADIUS) FOR 5/8 THRU 1".
0.625
0.070
0.555
2.6 ELONGATION: 12% MIN.
2.7 REDUCTION OF AREA: 35% MIN.
2.8 SURFACE DISCONTINUITY: MUST MEET ASTM A 574
2.9 LIMITS OF DECARBURIZATION: MUST MEET ASTM A 574
0.500
3.0 TESTING SPECIFICATION
5/8-18 UNF - 2A
3.1 MUST MEET ASTM A 574 FOR QUALITY OF WORKMANSHIP AND TESTING
METHODS.
A
4.0 PLATING SPECIFICATION
DRAWN
4.1 NOT APPLICABLE - BLACK OIL FINISH
SZOLADZ
1/19/2012
CHECKED
A
TITLE
5.0 METHOD OF MANUFACTURE
QA
5.1 COLD FORM - ROLLED THREADS
5/8-18UNF-2A X 5 SHCS
MFG
6.0 GENERAL
APPROVED
6.1 DEVIATION FROM THE ABOVE MUST BE APPROVED BY LAWSON
VIA A WRITTEN WAIVER. FAILURE TO DO SO WILL RESULT IN
PRODUCT REJECTION AT SUPPLYING FIRM'S EXPENSE.
SIZE
B
SCALE 5:1
4
3
2
PART NUMBER
REV
1
64278
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