Fittings & Adapters - Thorburn Flex Inc

SAE J518 O-Ring Flange 37° FlaredAdapters
SAE CODE 61 AND CODE 62 4-BOLT SPLIT FLANGE
D
C
A
B
B
The SAE code 61 and Code 62 4-Bolt Split Flange. Code 61 is
considered the “standard” series and Code 62 is the “6000 psi”
series. Their basic design is the same, but for the higher pressure
Code 62 connection, the bolt hole spacing and flanged
head diameters are larger and the flange head thicker (D dimension
in picture).These connectors are used the world over in fluid
power systems, usually as a connection to pumps and motors.
Special Clarification Notes:
1. The -10 size, common outside North America, is not an SAE Standard
size.
2. Caterpillar flanges are the same flange OD as SAE Code 62, but have a
thicker flange head (see dimension D in table).
3. Poclain flanges are completely different from SAE flanges. (see page 49
for details)
THREAD NOMENCLATURE
5
/8
3
/4
1
1 1 /4
1 1 /2
2
2 3 /4
3
3 1 /2
4
5
COMMERCIAL MATERIAL SPECIFICATIONS
Steel
Stainless
Steel
ASTM Type ASTM Type
SAE1008/J524B A249 316
A108 12L14 A479 316
A578 C1110 A479 316
SAE1020 A276 316
A108 12L14 A479 316
A108 C1137 A276 316
A
CODE 61 & CODE 62 SPECIFICATIONS
B
The female (port) is an unthreaded hole with
four bolt holes in a rectangular pattern around
the port. The male consists of a flanged head
with a groove for an O-ring, and either a captive
flange or split flange or split flange halves
with bolt holes to match the port. The seal
takes place when the O-ring is compressed
between the flange head and the flat surface
surrounding the port. The threaded bolts hold
the connection together.
*SAE J518, JIS B 8363, ISO/DIS 6162 and DIN
20066 are interchangeable, except for bolt sizes.
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