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Hydraulic Fluid Power - Accessories for Single Rod Cylinders, 16 Mpa (160 bar) Medium and 25 Mpa (250 bar) Series - Rod Eye Plain, Female Thread

Standard: GB /T 39949.1

Available sizes: 12 to 63 (8 sizes)

Dimensional Specifications (mm)

Size	P	k_max	k_min	s_max	s_min	ds_max	ds_min	k_nominal	ds_nominal
12	12500	20.5	44	M14×1.5	16	18	22	16	19
16	32000	32	65	M20×1.5	25	27	31	25	29
20

Standard Versions

GB /T 39949.1— Hydraulic Fluid Power - Accessories for Single Rod Cylinders, 16 Mpa (160 bar) Medium and 25 Mpa (250 bar) Series - Rod Eye Plain, Female Thread
GB /T 39949.1— Hydraulic Fluid Power - Accessories for Single Rod Cylinders, 16 Mpa (160 bar) Medium and 25 Mpa (250 bar) Series - Rod Eye Spherical, Female Thread
GB /T 39949.1— Hydraulic Fluid Power - Accessories for Single Rod Cylinders, 16 Mpa (160 bar) Medium and 25 Mpa (250 bar) Series: AA4-S - Pivot Pin, Plain Bearing or AA6-S - Pivot Pin, Spherical Bearing
GB /T 39949.1— Hydraulic Fluid Power - Accessories for Single Rod Cylinders, 16 Mpa (160 bar) Medium and 25 Mpa (250 bar) Series: AA4-R - Pivot Pin, Plain Bearing or AA6-R - Pivot Pin, Spherical Bearing
GB /T 39949.1— Hydraulic Fluid Power - Accessories for Single Rod Cylinders, 16 Mpa (160 bar) Medium and 25 Mpa (250 bar) Series - Trunnion Bracket
GB /T 39949.1— Hydraulic Fluid Power - Accessories for Single Rod Cylinders, 16 Mpa (160 bar) Medium and 25 Mpa (250 bar) Series - Clevis Bracket, In Angle
GB /T 39949.1— Hydraulic Fluid Power - Accessories for Single Rod Cylinders, 16 Mpa (160 bar) Medium and 25 Mpa (250 bar) Series - Clevis Bracket Straight
GB /T 39949.1— Hydraulic Fluid Power - Accessories for Single Rod Cylinders, 16 Mpa (160 bar) Medium and 25 Mpa (250 bar) Series - Rod Flange, Circular
GB /T 39949.1— Hydraulic Fluid Power - Accessories for Single Rod Cylinders, 16 Mpa (160 bar) Medium and 25 Mpa (250 bar) Series - Rod Clevis, Female Thread
ISO 8132— Hydraulic Fluid Power - Accessories for Single Rod Cylinders, 16 Mpa (160 bar) Medium and 25 Mpa (250 bar) Series - Rod Eye Plain, Female Thread
ISO 8132— Hydraulic Fluid Power - Accessories for Single Rod Cylinders, 16 Mpa (160 bar) Medium and 25 Mpa (250 bar) Series - Rod Eye Spherical, Female Thread
ISO 8132— Hydraulic fluid power - accessories for single rod cylinders, 16 MPa (160 bar) medium and 25 MPa (250 bar) series: AA4-S - Pivot pin, plain bearing or AA6-S - Pivot pin, spherical bearing
ISO 8132— Hydraulic Fluid Power - Accessories for Single Rod Cylinders, 16 Mpa (160 bar) Medium and 25 Mpa (250 bar) Series: AA4-R - Pivot Pin, Plain Bearing or AA6-R - Pivot Pin, Spherical Bearing
ISO 8132— Hydraulic Fluid Power - Accessories for Single Rod Cylinders, 16 Mpa (160 bar) Medium and 25 Mpa (250 bar) Series - Trunnion Bracket
ISO 8132— Hydraulic Fluid Power - Accessories for Single Rod Cylinders, 16 Mpa (160 bar) Medium and 25 Mpa (250 bar) Series - Clevis Bracket, In Angle
ISO 8132— Hydraulic Fluid Power - Accessories for Single Rod Cylinders, 16 Mpa (160 bar) Medium and 25 Mpa (250 bar) Series - Clevis Bracket Straight
ISO 8132— Hydraulic Fluid Power - Accessories for Single Rod Cylinders, 16 MPa (160 bar) medium and 25 MPa (250 bar) Series - Rod Flange, Circular
ISO 8132— Hydraulic Fluid Power - Accessories for Single Rod Cylinders, 16 Mpa (160 bar) Medium and 25 Mpa (250 bar) Series - Rod Clevis, Female Thread

Surface Treatment Recommendations

Zinc Plating (Zn)

Standard corrosion protection for indoor and mild outdoor environments.

Salt spray: 96–200 hours | RoHS compliant (trivalent chromium)

Zinc-Nickel Alloy (Zn-Ni)

High-performance coating for automotive, marine, and harsh environments.

Salt spray: 720–1500 hours | Recommended for grade 8.8+

Hot-Dip Galvanizing

Heavy-duty protection for structural and outdoor applications.

Salt spray: 500–1000 hours | Thread tolerance adjustment required

Note for high-strength fasteners (Grade 10.9, 12.9): Electroplating processes require hydrogen embrittlement relief baking (minimum 4 hours at 200°C within 4 hours of plating). Contact our engineering team for grade-specific plating recommendations.