Filleted with silver - Connected with silver rods. See Exodus 27:10,

All the pillars round about the court shall be filleted with silver,.... This is observed, because only mention is made before of the pillars that were on the south and north sides of the court, as filleted with silver; but inasmuch as those at both ends, east and west, were to be so likewise, this is added:

their hooks shall be of silver, and their sockets of brass; no notice having been taken of the hooks to the pillars at both ends, though they were as necessary there as elsewhere, and must be supposed, and though the sockets are mentioned, yet not their metal, and therefore are in general included here.

"All the pillars of the court round about (shall be) bound with connecting rods of silver." As the rods connecting the pillars of the court were of silver, and those connecting the pillars at the entrance to the dwelling were of wood overlaid with gold, the former must have been intended for a different purpose from the latter, simply serving as rods to which to fasten the hangings, whereas those at the door of the dwelling formed an architrave. The height of the hangings of the court and the covering of the door is given in Exodus 38:17 as 5 cubits, corresponding to the height of the pillars given in Exodus 28:18 of the chapter before us; but the expression in Exodus 38:18, "the height in the breadth," is a singular one, and רחב is probably to be understood in the sense of רחב door-place or door-way, - the meaning of the passage being, "the height of the covering in the door-way." In Exodus 28:18, "50 everywhere," πεντήκοντα ἐπὶ πεντήκοντα (lxx), lit., 50 by 50, is to be understood as relating to the extent towards the north and south; and the reading of the Samaritan text, viz., באמּה for בחמשּׁים, is merely the result of an arbitrary attempt to bring the text into conformity with the previous באמּה מאה, whilst the lxx, on the other hand, by an equally arbitrary change, have rendered the passage ἑκατὸν εφ ̓ ἑκατὸν.

All the pillars round about the court shall be filleted with silver; their hooks shall be of silver, and their sockets of brass.

[2] pillars

The fillets and hooks upholding the linen hangings are of silver See Scofield Note: "Ex 38:27" for it is in virtue of His redemptive work that Christ is our way of access, and not by virtue of His righteous life (symbolized by the fine linen); but the pillars of the court rest upon brass sockets, not silver as in the case of the boards See Scofield Note: "Ex 26:19" and brass symbolizes divine righteousness in judgment See Scofield Note: "Num 21:9". Redemption not only displays God's mercy, but vindicates His righteousness in showing that mercy. Rom 3:21-26.

27:9-19 The tabernacle was enclosed in a court, about sixty yards long and thirty broad, formed by curtains hung upon brazen pillars, fixed in brazen sockets. Within this enclosure the priests and Levites offered the sacrifices, and thither the Jewish people were admitted. These distinctions represented the difference between the visible nominal church, and the true spiritual church, which alone has access to God, and communion with him.