SAE Grade 2 / 5 / 8 - Markings & Strength

Printable shop wall chart: SAE Grade 2 / 5 / 8 - Markings & Strength. Free letter-size PDF to print and post at the counter; 25 x 36 inch poster version available.

Last reviewed 2026-09-10 · reference FG-5A64BE · Report an error on this sheet

	Grade 2	Grade 5	Grade 8
Head marking	None (maker ID)	3 lines, 120 deg	6 lines, 60 deg
Material	Low/medium carbon	Medium carbon, Q&T	Medium carbon alloy, Q&T
Size range	1/4 - 1-1/2 in	1/4 - 1-1/2 in	1/4 - 1-1/2 in
Proof	55 / 33 ksi*	85 / 74 ksi**	120 ksi
Yield (min)	57 / 36 ksi*	92 / 81 ksi**	130 ksi
Tensile (min)	74 / 60 ksi*	120 / 105 ksi**	150 ksi
Hardness	B80-B100 / B70-B100*	C25-C34 / C19-C30**	C33 - C39
Nut (SAE J995)	Grade 2	Grade 5	Grade 8

Grade 2 bolts 1/4 - 3/4 in longer than 6 in are supplied with Grade 1 properties. J429 covers sizes to 1-1/2 in only. Match the nut: SAE J995 Grade 2, 5 or 8. Grade 5 and 8 are close in strength to metric 8.8 and 10.9 but are not interchangeable.

These tables carry the same figures as the printed sheet below.

The printed sheet

SAE Grade 2 / 5 / 8 - Markings & Strength

25 x 36 inch poster version

For the full-size shop poster, tell us where to send it.

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Text version of this sheet

GRADE 2

GRADE 5

GRADE 8

SAE J429 inch steel bolts and screws · head marks and minimum properties

SAE J429 comparison

Grade 2

Grade 5

Grade 8

Head marking

None (maker ID)

3 lines, 120 deg

6 lines, 60 deg

Material

Low/medium carbon

Medium carbon, Q&T

Medium carbon alloy, Q&T

Size range

1/4 - 1-1/2 in

Proof

55 / 33 ksi*

85 / 74 ksi**

120 ksi

Yield (min)

57 / 36 ksi*

92 / 81 ksi**

130 ksi

Tensile (min)

74 / 60 ksi*

120 / 105 ksi**

150 ksi

Hardness

B80-B100 / B70-B100*

C25-C34 / C19-C30**

C33 - C39

Nut (SAE J995)

Grade 2

Grade 5

Grade 8

Grade 2 bolts 1/4 - 3/4 in longer than 6 in are supplied with Grade 1 properties. J429 covers sizes to 1-1/2 in only. Match the nut: SAE J995 Grade 2, 5 or 8. Grade 5 and 8 are close in

strength to metric 8.8 and 10.9 but are not interchangeable.

The Fastener App | TheFastenerApp.com

Fastener Guide reference FG-5A64BE · thefastenerapp.com/fastener-guide/wall-charts/sae-grade-2-5-8-markings-and-strength · © The Fastener App. Reference only — verify the current governing standard, drawing and manufacturer data before specifying or installing.

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Works on any phone camera, or a handheld scanner if they have one

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See what every customer buys from you

Every account gets a category chart: share of dollars, share of times ordered and share of pieces. Your reps see what each customer buys from you, and the categories they are buying somewhere else stand out.

Share of dollars

Fasteners37%$69,879

Electrical10%$19,152

Fleet and Automotive7%$12,293

Hardware and Building Supplies5%$10,243

Tools and Equipment5%$9,811

Cutting Tools and Metalworking5%$9,740

Plumbing5%$8,865

All other25%$46,410

Share of times ordered

Fasteners44%355

Electrical12%94

Fleet and Automotive7%53

Tools and Equipment6%48

Cutting Tools and Metalworking4%36

Pneumatics4%34

Hardware and Building Supplies4%33

All other20%162

Share of pieces

Fasteners75%486,316

Fleet and Automotive6%38,905

Electrical5%31,100

Hardware and Building Supplies3%19,775

Sealing3%17,704

Abrasives3%17,251

General MRO2%16,133

All other4%23,770

Sample report from our demo store.

Sales rep territory management

The time planner splits each rep’s month by how much every customer spends. A customer that is 20% of the rep’s business gets about 35 hours a month, about 8 hours a week, and the rep’s week is laid out for them.

Share of the rep’s business

Summit Precast LLC20.2%

Brunswick Galvanizing Inc.14.6%

Talleyrand Signs LLC8.0%

Mayport Tool & Die Inc.7.8%

Eagle Mechanical LLC7.2%

Premier Electric Group5.9%

Tallahassee Packaging LLC3.7%

Coastal Maintenance Group3.3%

All others (64 customers)29.4%

Time each customer deserves

Customer	Hours a month	Hours a week
Summit Precast LLC	35.0	8.1
Brunswick Galvanizing Inc.	25.3	5.8
Talleyrand Signs LLC	13.9	3.2
Mayport Tool & Die Inc.	13.5	3.1
Eagle Mechanical LLC	12.5	2.9
Premier Electric Group	10.2	2.4
Tallahassee Packaging LLC	6.4	1.5
Coastal Maintenance Group	5.7	1.3
All others (64 customers)	51.0	11.8

Sample plan from our demo store: 173 hours a month, all selling time.

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We had a professional photographer come in and spend weeks in our warehouse, photographing and producing real, high-resolution photos of many of our products. This work is ongoing, and many more products will be added. Right now the photographs cover more than 27,000 SKUs. We also have AI image generation capabilities.