M3.5 × 0.6 M profile External Thread Specifications

M3.5x0.6-6g

ASMESTD: ASME B1.13MSOURCE: Table 14 · p. 26TYPE: External (bolt/screw)CLASS: 6gSERIES: M coarse (Table 4)2nd choice (Table 6, p. 9) · standard size

Major diameter

3.479 – 3.354

max – min

Pitch diameter

3.089 – 3.004

max – min

Minor diameter

2.829 – 2.634

max – min (min is a reference value)

Fundamental deviation

es −0.021

pitch 0.6 mm · position g

Thread profile

M3.5x0.6-6g: solid line = maximum material profile, dashed = minimum material, hatched = tolerance zone (Figs. 8 and 9), grey dashed = basic profile (Fig. 1). Drawn to scale; values in mm, diameters shortened.

Limits of size, class 6g

Dimension	Basic	Max	Min	Tolerance
Major diameter dOutside diameter over the crests	3.500	3.479	3.354	0.125
Pitch diameter d2Where thread and groove widths are equal; sets the fit	3.110	3.089	3.004	0.085
Minor diameter, flat root d1Max d1 (flat form); min = d3 of the rounded form, for reference	2.850	2.829	2.634ref.	0.195ref.
Rounded-form minor diameter d3d3 max and d3 min; used for tools and gaging		2.824ref.	2.634ref.
Deviations, pitch diameter es / eiUpper and lower deviation from the basic pitch diameter (Fig. 4)	—	−0.021	−0.106	—
Deviations, major diameter es / eiCrest diameter	—	−0.021	−0.146	—

Dimensions in millimetres. Values are those of the standard (ASME B1.13M); calculated cells follow the standard’s formulas. Where the standard prints a value that differs from its formula, the printed value is shown with a note.

Tolerance zones relative to the basic size, mm (Fig. 4)

Lead, flank angle and length of engagement

Allowable lead variation ±δP: 0.025 mmOver the length of engagement
Equivalent change in functional diameter δd2: 0.042 mmHalf the pitch diameter toleranceformula gives 0.043
Allowable half-angle variation ±δα: 2° 40′ Each 30° flank angle
Length of engagement, normal LE: 1.7 – 5.0 mmShort up to / long over: see all values

Notes

Table 17 prints lead 0.025 / functional dia 0.042; para 10.1.5 with the PD tolerance 0.085 gives 0.025 / 0.043. The printed value is the round-half-to-even result (rounding rule used before ASME B1.30, Foreword (d)(4)). Normal tolerance, small allowance (para 5.5.1(a)); the usual bolt class, ~ inch 2A.

Mates

M3.5x0.6-6g screws into a thread of the same standard at the same size and pitch. The standard mating internal thread is class 6H. Check the fit with the standard pair →

Working out the mating options…

Different pitch or a different thread family never mate; the fit check runs over both tolerance zones.

Related thread sizes

Same diameter other pitch, and neighbouring sizes

→ M3.5 × 0.35 mm → M3 × 0.5 mm → M4 × 0.5 mm → M3.5 × 0.6 internal → ISO metric M3.5x0.6 external

All values for M3.5x0.6-6gevery column of the workbook row

All values of the workbook row M3.5x0.6-6g
Designation	M3.5x0.6-6g
Alternate designation (all capitals, para 7.2.3)	M3.5X0.6-6G EXT
Pitch in designation	0.6
Thread form	M
Series	Coarse
Series name	Standard coarse pitch series (Table 4)
External / internal	External
Class	6g
Nominal size	M3.5
Pitch P (mm)	0.60
Basic major dia D, d (mm)	3.500
Size category	2nd choice (Table 6, p. 9) · standard size
Source table	Table 14
Printed page	26
Thread type	M coarse (Table 4)
Tolerance position, pitch dia	g
Tolerance grade, pitch dia	6
Tolerance position, crest dia	g
Tolerance grade, crest dia	6
Fundamental deviation es / EI, pitch dia (mm)	-0.021
Fundamental deviation es / EI, crest dia (mm)	-0.021
Allowance \|es\| / EI (mm)	0.021
Major dia max (mm)	3.479
Major dia min (mm)	3.354
Major dia tolerance Td (mm)	0.125
Major dia status	Toleranced (d max, d min)
Basic pitch dia D2, d2 (mm)	3.110
Pitch dia max (mm)	3.089
Pitch dia min (mm)	3.004
PD tolerance Td2 / TD2 (mm)	0.085
Basic minor dia D1, d1 (mm)	2.850
Minor dia max (mm)	2.829
Minor dia min (mm)	2.634
Minor dia tolerance TD1 (mm)	0.195
Minor dia status	d1 max toleranced (flat form, para 9.3.2(e)); min is d3 min of the rounded form, for reference (Table 14 note 4)
Max minor dia, flat form d1 (mm)	2.829
Min minor dia, rounded form d3 (mm, reference)	2.634
Max minor dia, rounded form d3, para 9.3.2(f) (mm)	2.824
Upper deviation, pitch dia es / ES (mm)	-0.021
Lower deviation, pitch dia ei / EI (mm)	-0.106
Upper deviation, crest dia (mm)	-0.021
Lower deviation, crest dia (mm)	-0.146
LE short, up to (mm)	1.7
LE normal, over (mm)	1.7
LE normal, up to and incl. (mm)	5.0
LE long, over (mm)	5.0
LE source	Table 7
Lead variation ± (mm)	0.025
Equivalent change in functional dia (mm)	0.042
Lead values source	Table 17, p. 47
Half-angle variation ±	2° 40′
Half-angle source	Table 18
Lead angle at basic PD (deg)	3.5141
Lead angle (deg min)	3° 31′
Tensile stress area As (mm²)	6.775
Thread angle (deg)	60
Flank angle (deg)	30
Sharp V height H (mm)	0.519615
Thread height h = 5H/8 (mm)	0.324760
Crest flat (mm)	0.075000
Root flat (mm)	0.150000
Sweep cut: start diameter (mm)	3.479000
Sweep cut: tip diameter (mm)	2.829000
Sweep cut: depth (mm)	0.325000
Sweep cut: profile width at start diameter (mm)	0.525000
Crest flat as modelled (mm)	0.074833
Inch (App. C): allowance (in.)	0.00083
Inch (App. C): major dia max (in.)	0.13697
Inch (App. C): major dia min (in.)	0.13205
Inch (App. C): pitch dia max (in.)	0.12161
Inch (App. C): pitch dia min (in.)	0.11827
Inch (App. C): PD tolerance (in.)	0.00335
Inch (App. C): minor dia max (in.)	0.11138
Inch (App. C): d3 min / D max, reference (in.)	0.10370
Inch (App. C): pitch (in.)	0.02362
Inch (App. C): printed page	54
Check against formulas	OK: all 8 printed Table 14 values agree with the formulas. Table 17 differs: printed 0.025 / 0.042, formula 0.025 / 0.043
Notes	Table 17 prints lead 0.025 / functional dia 0.042; para 10.1.5 with the PD tolerance 0.085 gives 0.025 / 0.043. The printed value is the round-half-to-even result (rounding rule used before ASME B1.30, Foreword (d)(4)). Normal tolerance, small allowance (para 5.5.1(a)); the usual bolt class, ~ inch 2A.

ASME B1.13M: Metric Screw Threads: M Profile. Source: workbook data (2026-10-10). Confirm against your licensed copy of the standard before use.