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For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2008 🢒 Omega VE 🢒 General Information 🢒 General Information 🢒 Fasteners
Table 1: Metric Prevailing Torque Fastener Minimum Torque Development
Table 2: English Prevailing Torque Fastener Minimum Torque Development
Table 3: Consumable Fasteners List

Metric Fasteners

This vehicle provides fastener dimensions using the metric system. Most metric fasteners are approximate in diameter to equivalent English fasteners. Make replacements using fasteners of the same nominal diameter, thread pitch, and strength.

A numerical marking identifies the OE metric fasteners except cross-recess head screws. The number also indicates the strength of the fastener material. A Posidrive® or Type 1A cross-recess identifies a metric cross-recess screw. For best results, use a Type 1A cross-recess screwdriver, or equivalent, in Posidrive® recess head screws.

Holden Engineering Standards have adopted a portion of the ISO-defined standard metric fastener sizes. The purpose was to reduce the number of fastener sizes used while retaining the best thread qualities in each thread size. For example, the metric M6.0 X 1 screw, with nearly the same diameter and 25.4 threads per inch replaced the English 1/4-20 and 1/4-28 screws. The thread pitch is midway between the English coarse and fine thread pitches.

Fastener Strength Identification
Object Number: 1949888 Size: MF
(1)English Bolt, Grade 2 (Strength Class)
(2)English Bolt, Grade 5 (Strength Class)
(3)English Bolt, Grade 7 (Strength Class)
(4)English Bolt, Grade 8 (Strength Class)
(5)Metric Nut, Strength Class 9
(6)Metric Bolts, Strength Class Increases as Numbers Increase

The most commonly used metric fastener strength property classes are 9.8 and 10.9. The class identification is embossed on the head of each bolt. The English, inch strength classes range from grade 2 to grade 8. Radial lines are embossed on the head of each bolt in order to identify the strength class. The number of lines on the head of the bolt is 2 lines less than the actual grade. For example, a grade 8 bolt will have 6 radial lines on the bolt head. Some metric nuts are marked with a single digit strength identification number on the nut face.

The correct fasteners are available through Holden Spare Parts Operations (HSPO). Many metric fasteners available in the aftermarket parts channels are designed to different metric standards of countries, and may exhibit the following:

    • Lower strength
    • No numbered head marking system
    • Wrong thread pitch

The metric fasteners on Holden products are designed to new, international standards. The following are the common sizes and pitches, except for special applications:

    • M6.0 X 1
    • M8 X 1.25
    • M10 X 1.5
    • M12 X 1.75
    • M14 X 2.00
    • M16 X 2.00

Prevailing Torque Fasteners

Prevailing torque fasteners create a thread interface between the fastener and the fastener counterpart in order to prevent the fastener from loosening.

All Metal Prevailing Torque Fasteners

These fasteners accomplish the thread interface by a designed distortion or deformation in the fastener.

Nylon Interface Prevailing Torque Fasteners

These fasteners accomplish the thread interface by the presence of a nylon material on the fastener threads.

Adhesive Coated Fasteners

These fasteners accomplish the thread interface by the presence of a thread-locking compound on the fastener threads. Refer to the appropriate repair procedure in order to determine if the fastener may be reused and the applicable thread-locking compound to apply to the fastener.


Object Number: 1949885 Size: MF
(1)Prevailing Torque Nut, Center Lock Type
(2)Prevailing Torque Nut, Top Lock Type
(3)Prevailing Torque Nut, Nylon Patch Type
(4)Prevailing Torque Nut, Nylon Washer Insert Type
(5)Prevailing Torque Nut, Nylon Insert Type
(6)Prevailing Torque Bolt, Dry Adhesive Coating Type
(7)Prevailing Torque Bolt, Thread Profile Deformed Type
(8)Prevailing Torque Bolt, Nylon Strip Type
(9)Prevailing Torque Bolt, Out-of-Round Thread Area Type

A prevailing torque fastener may be reused only if:

    • The fastener and the fastener counterpart are clean and not damaged
    • There is no rust on the fastener
    • The fastener develops the specified minimum torque against its counterpart prior to the fastener seating

Metric Prevailing Torque Fastener Minimum Torque Development

Application

Specification

Metric

English

All Metal Prevailing Torque Fasteners

  • 6 mm

0.4 N·m

4 lb in

  • 8 mm

0.8 N·m

7 lb in

  • 10 mm

1.4 N·m

12 lb in

  • 12 mm

2.1 N·m

19 lb in

  • 14 mm

3 N·m

27 lb in

  • 16 mm

4.2 N·m

37 lb in

  • 20 mm

7 N·m

62 lb in

  • 24 mm

10.5 N·m

93 lb in

Nylon Interface Prevailing Torque Fasteners

  • 6 mm

0.3 N·m

3 lb in

  • 8 mm

0.6 N·m

5 lb in

  • 10 mm

1.1 N·m

10 lb in

  • 12 mm

1.5 N·m

13 lb in

  • 14 mm

2.3 N·m

20 lb in

  • 16 mm

3.4 N·m

30 lb in

  • 20 mm

5.5 N·m

49 lb in

  • 24 mm

8.5 N·m

75 lb in


English Prevailing Torque Fastener Minimum Torque Development

Application

Specification

Metric

English

All Metal Prevailing Torque Fasteners

  • 1/4 in

0.5 N·m

4.5 lb in

  • 5/16 in

0.8 N·m

7.5 lb in

  • 3/8 in

1.3 N·m

11.5 lb in

  • 7/16 in

1.8 N·m

16 lb in

  • 1/2 in

2.3 N·m

20 lb in

  • 9/16 in

3.2 N·m

28 lb in

  • 5/8 in

4 N·m

36 lb in

  • 3/4 in

7 N·m

54 lb in

Nylon Interface Prevailing Torque Fasteners

  • 1/4 in

0.3 N·m

3 lb in

  • 5/16 in

0.6 N·m

5 lb in

  • 3/8 in

1 N·m

9 lb in

  • 7/16 in

1.3 N·m

12 lb in

  • 1/2 in

1.8 N·m

16 lb in

  • 9/16 in

2.5 N·m

22 lb in

  • 5/8 in

3.4 N·m

30 lb in

  • 3/4 in

5 N·m

45 lb in


Consumable Fasteners List

Application

Specification

Part #

Vehicle Quantity

Power Steering Pump to Bracket Attaching Bolt

11588903

2

Power Steering Pump Bracket to V6 Engine Attaching Bolt

11588734

2

Power Steering Pump Bracket to V6 Engine Attaching Bolt

92138979

1

Intermediate Steering Shaft to Pinion Shaft Retaining Bolt

92138918

1

Tie Rod End to Steering Knuckle Retaining Nut

11609618

2

Front Castor Arm Ball Joint to Steering Knuckle Retaining Nut

11900443

2

Steering Wheel to Steering Column Shaft Retaining Nut (BOLT)

11610164

1

Steering Column Assembly to Body Attaching Bolt (Lower)

92191045

2

Steering Column Assembly to Body Attaching Bolt (Upper)

92191046

2

Steering Column Shaft to Intermediate Steering Shaft Retaining Bolt

92191042

1

Front Strut to Knuckle Retaining Nut

92138862

2

Front Strut to Knuckle Retaining Bolt

92138863

2

Front Strut to Knuckle Washer

92138864

2

Front Caster Arm to Subframe Bolt (LWR CTR ARM FRONT)

92139036

2

Front Lower Control Arm to Subframe Retaining Nut

11900443

2

Front Lower Control Arm Ball Joint Nut

11900443

2

Front Lower Control Arm Bolt

92139035

2

Front Wheel Hub to Steering Knuckle Retaining Bolt

92138879

6 (3 per side)

Front Stabiliser Bar Link Ball Joint Stud Retaining Nut

92138590

4 (2 per side)

Front Stabiliser Bar Support Bracket Retaining Nut

11900440

4 (2 per side)

Steering Knuckle to Strut Assembly Retaining Bolt

92138862

2

Steering Knuckle to Strut Assembly Retaining Nut

92138863

2

Steering Knuckle to Strut Assembly Retaining Washer

92138864

2

Front Castor Arm Inner Pivot Attaching Bolt

92139036

2 (1 per side)

Front Castor Arm Inner Pivot Attaching Nut

11900443

2 (1 per side)

Rear I-Link to Subframe Attaching Nut

11900443

2 (1 per side)

Rear Lower Control Arm to Knuckle Retaining Nut

11516078

2 (1 per side)

Rear Lower Control Arm to Strut Assembly Retaining Nut

11516078

2 (1 per side)

Rear Lower Control Arm to Subframe Retaining Nut

11900443

2 (1 per side)

Wheel Drive Shaft to Spindle Retaining Nut

92138989

2 (1 per side)

Wheel Drive Shaft to Spindle Washer

92189154

2 (1 per side)

Rear Stabiliser Bar Link to Lower Control Arm Retaining Nut

11516077

2 (1 per side)

Rear Stabiliser Bar Link to Stabiliser Bar Retaining Nut

11516077

2 (1 per side)

Rear Upper Control Arm Pivot Joint Bushing to Subframe Retaining Bolts

92138835

4 (2 per side)

Rear Upper Control Arm to Knuckle Retaining Nut

11516078

2 (1 per side)

Rear Y-Link to Knuckle Retaining Nut

11516078

2 (1 per side)

Rear Y-Link to Subframe Retaining Nut

11516078

2 (1 per side)

Propeller Shaft Rubber Coupling to Propeller Shaft Retaining Nut (3 Bolt/Nut Kit)

92148356

1 Kit

Propeller Shaft Rubber Coupling to Propeller Shaft Yoke Retaining Nut (3 Bolt/Nut Kit)

92148356

1 Kit

Propeller Shaft Rubber Coupling to Transmission Flange Retaining Nut (3 Bolt/Nut Kit)

92148356

1 Kit

Differential Pinion Flange Retaining Nut

92194936

1

Differential to Subframe Retaining Nut

11516078

3

Front Brake Caliper to Knuckle Retaining Bolt

92172963

4 (2 per side)

Front Brake Caliper Slide Pin Retaining Bolt

92193459

4 (2 per side)

Rear Brake Caliper to Knuckle Retaining Bolt

92172963

4 (2 per side)

Rear Brake Caliper Slide Pin Retaining Bolt

92193459

4 (2 per side)

Flywheel to V6 Engine Attaching Bolt

Not Serviced

 

Flexplate to V6 Engine Attaching Bolt

11588884

8

Exhaust Manifold to Cylinder Head Attaching Bolt (V6)

11518862

8

M8 Cylinder Head to Block Attaching Bolt (V8)

11518860

7

M11 Cylinder Head to Block Attaching Bolt (V8)

12558840

10

Flywheel to V8 Engine Attaching Bolt

11519772

20

Flexplate to V8 Engine Attaching Bolt

12553332

6

Exhaust Manifold to Cylinder Head Attaching Bolt (V8)

12553332

6

Rear Subframe to Chassis Attaching Bolt

11518860

12 (6 per side)

Catalytic Converter to Exhaust Manifold Attaching Nut (V6)

92138973

4

Catalytic Converter to Exhaust Manifold Attaching Nut (V8)

15709703

4

Intermediate Exhaust Assembly to Catalytic Converter Retaining Nuts

15709703

4

V6 6 Speed (Aisin) Manual Transmission Drive Flange Retaining Nut

89058850

4

V8 6 Speed (Tremec) Manual Transmission Drive Flange Retaining Nut

89059464

1

V6 5 Speed (5L40-E) Automatic Transmission Drive Flange Retaining Nut

96041805

1

Door Hinge Pin Keeper Bolt

92138945

4 (2 per side)

Door Check Link Attaching Bolt

11517868

4 (2 per side)

Door Latch Attaching Screw (Front)

11609341

6 (3 per side)

Door Latch Attaching Screw (Rear)

11609341

6 (3 per side)